618:(EFF) has cautioned that "Slack stores and is able to read all of your communications, as well as identifying information for everyone in your workspace." They commended the company for following several best practices in standing up for users concerning government data requests, such as requiring a warrant for content stored on its server, and awarding it four out of five stars in its 2017 "Who has your back" report; the EFF also criticized Slack for "a broad set of exceptions" to its promise to notify users of such requests, and for other privacy shortcomings.
3018:
50:
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547:
In August 2013, 8,000 customers signed up for the service within 24 hours of its launch. In
February 2015, the company reported that approximately 10,000 new daily active users had signed up each week, and had more than 135,000 paying customers spread across 60,000 teams. By April 2015, those numbers
379:
On
January 4, 2021, Slack suffered a significant outage that lasted several hours. From 10 AM ET until 3 PM ET, users could not log in, send or receive messages, place or answer calls, or use Slack connections. After 3 PM, most of the core features became operational, except for push
465:. In July 2015, Slack launched an integration with Google Calendar. Later, in December of the same year, a searchable directory was introduced, consisting of over 150 integrations that users can install. In addition to these integrations, Slack offers users the ability to incorporate and customize
414:
Slack allows communities, groups, or teams to join a "workspace" via a specific URL or invitation sent by a team admin or owner. A workspace can contain both public and private channels, with public channels being accessible to all members of the workspace. Both public and private channels can be
629:
Slack has also been criticized for a retroactive 2018 change to its privacy policy, allowing access to all public and private chat messages by workspace administrators, without the need of consent from any parties using the app. According to the new policy, Slack workspace members are no longer
407:-style features, including persistent chat rooms known as channels, which are organized by topic, as well as private groups and direct-messaging functionalities. All content, including files, conversations, and people, is searchable within Slack. Users can express their reactions in the form of
325:
In July 2020, Slack acquired Rimeto, a startup specializing in employee directories and profiles, with plans to rename the service and operate it as a standalone app. Almost a year later, in June 2021, its functionality was launched as an optional feature within Slack named "Slack Atlas".
538:
attempted to switch its community of over 8,000 users to Slack in 2015, however, they experienced many technical issues and were advised by Slack support to limit their channels to "no more than 1,000 users (ideally more like 500)". That specific limit no longer applied by
January 2017.
548:
had grown to 200,000 paid subscribers and a total of 750,000 daily active users. Late in 2015, Slack passed more than a million daily active users. As of May 2018, Slack had over 8 million daily users, 3 million of whom had paid accounts. At the time of its
496:, draw on a shared screen, and invite others to the call. In June 2022, Huddles received the additional functionality of video calls. Huddles are restricted to only two participants on free tiers, while paid plans offer the capacity for up to 50 participants.
559:
In 2019, it was estimated that employees at large firms were sending over 200 Slack messages per week on average. From 2013 to 2019 the amount of time spent on work email had declined, which was attributed to the proliferation of Slack and its competitors
625:
servers under Slack control. This is found to be a particular issue for users with large teams, who experienced issues with connectivity within the app, access to archived messages, and the number of users for a given "workspace".
1237:
185:
Chinese (Traditional), Chinese (Simplified), English (UK), English (US), French (France), German (Germany), Italian (Italy), Japanese (Japan), Korean (South Korea), Portuguese (Brazil), Spanish (Latin
America), Spanish
333:
announced an agreement for
Salesforce to acquire the company for approximately $ 27.7 billion, marking one of the most significant tech acquisitions at that time. The acquisition was completed on July 21, 2021.
473:
that enables users to develop applications and automate various processes, including sending notifications based on input, generating alerts for specific conditions, creating internal support tickets, and more.
288:
In 2012, Butterfield decided to name their upcoming product "Slack", which he said was derived from the phrase "Searchable Log of All
Conversation and Knowledge", replacing the previous codename "linefeed".
1071:
534:
product whose main paid features are the ability to search more than 90 days' archived messages and add unlimited apps and integrations. They also claim support for an unlimited number of users. When
1974:
1803:
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987:
469:
known as "Slackbots". These chatbots can be configured to send notifications, reminders, or provide tailored responses to specific phrases, among other functions. Furthermore, Slack provides an
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2501:
1104:
1185:
2001:
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for over four days in
February 2015 and that some data associated with user accounts had been compromised, including email addresses, usernames, hashed passwords, phone numbers, and
285:
was not going to bring necessary profits. As a result, he decided to change the direction of his company and repurpose the communication tools they had developed into a new product.
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888:
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Direct messages enable users to engage in private one-on-one or group conversations with up to nine participants. Group direct message can be converted into a private channel.
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281:(IRC) protocol and included scripts designed to automate and organize file exchanges among their development team. By October 2012, Stewart Butterfield realized that
2160:
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service, with its userbase being predominantly team-based businesses while its functionalities are primarily focused on business administration and communication.
2687:
1063:
341:, an executive vice president at Salesforce. On November 13, 2023, Salesforce executive Denise Dresser was appointed to replace Jones, who was in turn replacing
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556:, dated April 26, 2019, Slack reported more than 10 million daily active users from more than 600,000 organizations, located in more than 150 countries.
485:
firm. This integration allows employees to access co-worker information, organizational charts, benefits, feedback, and time-off requests within Slack.
300:
messaging protocols. However, in May 2018, the company chose to close down these corresponding gateways due to limitations inherent to those protocols.
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In 2022, Slack suffered widely reported outages on
February 22, March 9 and July 26. On 31 December 2022, Slack announced that its private
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in addition to their web browser client and desktop clients for MacOS, Windows, and Linux (beta). Slack is also available for the
2876:
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4259:
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and Slack announced an expanded partnership that introduced secure AI capabilities to enterprise content management.
136:
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integration for Slack and can be used for summarizing conversations, answering questions, or drafting replies.
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806:
4284:
4279:
4136:
1036:
553:
3962:
4249:
3591:
3382:
319:
198:
27:
2292:"Startup founder claims $ 2.8 billion startup Slack is misleading people about its free 'unlimited' plan"
586:
wrote that Slack was the first business technology to have crossed from business into personal use since
4274:
2470:
337:
On
December 5, 2022, Salesforce announced that Butterfield was leaving Slack and would be succeeded by
2982:"Why tech groups can use Slack for free but open source projects and businesses of any size shouldn't"
2465:
945:
3906:
3714:
3657:
3566:
3362:
3247:
2403:
634:
561:
492:
feature known as "Huddles". Within a Huddle, users have the capability to mute or unmute themselves,
421:
Slack integrates with many third-party services and supports community-built integrations, including
411:
to any message. Message history on Slack is limited to messages from last 90 days on the free plan.
252:
210:
1943:
1261:"Salesforce acquires Slack for over $ 27 billion, marking cloud software vendor's largest deal ever"
4244:
4026:
3772:
3734:
3729:
3601:
3581:
3437:
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20:
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919:
832:
308:
292:
In August 2013, Slack was launched to the public and continued to maintain compatibility with
149:
2845:"Uber didn't like Silicon Valley's biggest chat apps – so it was forced to make its own"
2716:
2346:"Flickr creator takes sign-ups for Slack, an office collaboration tool with universal search"
3707:
3687:
3516:
3352:
2849:
2816:
1613:
1597:
749:
734:
587:
205:
144:
2778:
1209:"Slack's new voice, video tools should fit nicely on Salesforce platform after deal closes"
395:
repositories had been compromised during the previous weeks, using stolen security tokens.
315:, with plans to shut down both services in February 2019 and migrate their users to Slack.
4106:
4081:
4066:
3993:
3800:
3631:
3551:
3347:
3342:
3337:
3282:
3237:
3140:
2404:"Billion-dollar startup Slack says it's adding $ 1 million in new contracts every 11 days"
1312:"Slack CEO Stewart Butterfield is leaving Salesforce two years after a deal was announced"
1151:"Slack Acquires Corporate Directory Startup Rimeto, Plans To Operate It As Standalone App"
622:
582:
565:
381:
236:
3017:
1800:"Flickr Co-Founder Stewart Butterfield Turns to Workplace Communication Tools With Slack"
600:
magazine criticized the platform for being "another utility we both rely on and resent".
3026:
49:
3931:
3891:
3611:
3511:
3432:
3252:
3242:
3217:
3205:
3162:
1967:"Workday and Slack announce partnership; Google, Microsoft and Facebook on the horizon"
1618:
1585:
859:"'What is Slack?' Everything you need to know about the professional messaging program"
493:
489:
980:"Flickr founder Stewart Butterfield's new Slack signed up 8,000 companies in 24 hours"
4238:
4036:
3936:
3901:
3724:
3332:
1521:
1064:"Slack buys HipChat with plans to shut it down and migrate users to its chat service"
478:
434:
338:
66:
2101:"Slack added video to Huddles so you don't have to spend your life in Zoom meetings"
1880:"Slack launches an app store and an $ 80 million fund to invest in new integrations"
4051:
4041:
3916:
3876:
3866:
3541:
3447:
3210:
535:
422:
1769:"Slack updated their privacy policy: Now your company can read 'private' messages"
1713:"How to join a Slack channel on desktop or mobile, whether it's public or private"
277:, an online video game. These communication tools were initially built around the
2318:
522:, allowing users to send direct messages, see mentions, and make simple replies.
4146:
4141:
4021:
3841:
3277:
3272:
2783:
1095:"Atlassian's HipChat and Stride to be discontinued, with Slack buying up the IP"
946:"Slack, the red hot $ 3.8 billion startup, has a hidden meaning behind its name"
858:
569:
519:
446:
385:
4202:
4086:
3881:
3752:
3692:
3606:
3576:
3417:
3407:
3402:
3357:
3135:
2712:
2682:
2494:"Slack launches user groups, hits 1.7M daily active users and 470K paid seats"
2372:
1099:
672:
608:
591:
330:
268:
244:
124:
120:
83:
74:
57:
2747:
1609:
1182:"Slack snags corporate directory startup Rimeto to up its people search game"
923:
4197:
4171:
4151:
4101:
4096:
4071:
3667:
3531:
3327:
2319:"Despite its marketing, Slack's free tier limits your total number of users"
604:
442:
353:
312:
34:
1601:
1364:"Salesforce names Denise Dresser to succeed Lidiane Jones as CEO of Slack"
4176:
4126:
4061:
4056:
4046:
4011:
3941:
3926:
3896:
3871:
3846:
3621:
3571:
3561:
3526:
3457:
3422:
3397:
3372:
3307:
3257:
549:
531:
454:
248:
2525:"Slack adds action buttons to become a true workplace communication hub"
1550:"Slack back online after users report outage affecting sending messages"
621:
Slack has been criticized by users for storing user data exclusively on
4031:
3851:
3777:
3697:
3662:
3536:
3427:
3297:
3292:
3287:
3262:
504:
466:
458:
430:
304:
4192:
4166:
4016:
3951:
3946:
3782:
3682:
3672:
3616:
3556:
3452:
3322:
3312:
2024:"Slack and Workday team up to bring HR tools into the Slack platform"
1405:"Box and Slack expand partnership with the launch of Box AI in Slack"
1128:"Slack Stock Soars, Putting Company's Public Value at $ 19.5 Billion"
603:
In 2017, Slack was recognized as the best startup of the year at the
500:
462:
450:
438:
426:
392:
346:
3052:
1339:"Salesforce appoints longtime executive Denise Dresser as Slack CEO"
668:"Slack's Co-Founders Take Home The Crunchie For Founder Of The Year"
1536:"Slack says its problems are solved, but you might have to refresh"
637:
projects for the inability to search for messages and discussions.
296:, reflecting its origin. Additionally, it was also compatible with
116:
3805:
3762:
3677:
3652:
3647:
3626:
3596:
3506:
3477:
3462:
3442:
3387:
2929:"Slacks new policy lets bosses read employees dms without consent"
2903:"Slacks new policy lets bosses read employees dms without consent"
408:
369:
157:
153:
2614:"Slack: workplace message app so cute you want to use it at home"
1853:"Slack Integrates With Google Calendar To Add Events To Channels"
3911:
3744:
3546:
3302:
3167:
912:"How Stewart Butterfield Created Slack From a Failed Video Game"
297:
3966:
3056:
1565:"Slack's private GitHub code repositories stolen over holidays"
263:
Slack originated as an internal communication tool used within
2127:"Slack's new ChatGPT bot will talk to your colleagues for you"
511:
470:
380:
notifications, email, and third-party integrations, including
293:
161:
2955:"Cutting Slack: When open source and team chat tools collide"
2435:"Slack continues huge growth, is now valued at $ 2.8 billion"
1431:"Slack Says It Was Hacked, Enables Two-Factor Authentication"
1037:"Slack cuts ties to IRC and XMPP, cos they don't speak Emoji"
2373:"Slack growth skyrockets: 10,000 new active users each week"
1011:"Slack: I've seen the future, and it reminds me of the past"
1935:
885:"Flickr founder plans to kill company e-mails with Slack"
499:
In March 2023, Salesforce announced the partnership with
2184:"Slack launches dark mode for macOS, Windows, and Linux"
2153:"How Slack brought its desktop app to the Windows Store"
2075:"How to use Slack's huddle feature (and why you should)"
2050:"New collaboration tools to help you work from anywhere"
1234:"Salesforce Signs Definitive Agreement to Acquire Slack"
1998:"Industry Leaders Slack & Workday are Now Partners"
1286:"Salesforce closes $ 27.7 billion acquisition of Slack"
630:
notified when data is downloaded from their workspace.
2812:"Open sourcers race to build better versions of Slack"
2265:"So Yeah We Tried Slack... and We Deeply Regretted It"
3023:
Interview with Slack co-founder
Stewart Butterfield:
2679:"And the winners of the 10th Annual Crunchies are..."
221:
3011:
2648:"What Happens When Work Becomes a Nonstop Chat Room"
4185:
4004:
3834:
3818:
3791:
3743:
3640:
3499:
3486:
3230:
3193:
3103:
3090:
216:
204:
192:
171:
143:
108:
90:
73:
56:
3862:Comparison of user features of messaging platforms
3025:Ryssdal, Kai; Hollenhorst, Maria (July 22, 2019).
2748:"Who Has Your Back? Government Data Requests 2017"
1911:"How to Make A 'Slackbot' for Free Without Coding"
2210:"Slack brings its app to the Apple Watch (video)"
701:"Flickr Cofounders Launch Slack, An Email Killer"
781:"Slack apps for computers, phones & tablets"
364:In March 2015, Slack announced that it had been
322:to reach a market value of $ 19.5 billion.
3978:
3068:
1827:"A Review of the Slack Communication Service"
372:IDs. In response to the attacks, Slack added
8:
633:Slack has also been criticized when used in
42:
3826:List of defunct instant messaging platforms
1492:"Slack kicks off 2021 with a global outage"
973:
971:
3985:
3971:
3963:
3496:
3100:
3075:
3061:
3053:
3016:
1590:Journal of the Medical Library Association
318:In June 2019, Slack went public through a
271:, during their work on the development of
41:
1617:
1462:"Slack starts 2021 with a massive outage"
239:team communication platform developed by
19:For the company that develops Slack, see
2877:"We Tried Slack and Deeply Regretted it"
2677:Lardinois, Frederic (February 6, 2017).
2589:"Is Slack ruining our jobs — and lives?"
2758:from the original on September 15, 2018
2715:; Gebhart, Gennie (February 14, 2018).
1909:Newlands, Murray (September 11, 2017).
1890:from the original on September 15, 2018
658:
2857:from the original on September 5, 2018
2727:from the original on September 4, 2018
2690:from the original on February 22, 2017
1946:from the original on December 28, 2018
1833:from the original on November 21, 2018
1806:from the original on November 25, 2013
1685:Krasnoff, Barbara (January 28, 2022).
1641:from the original on November 30, 2018
1043:from the original on September 3, 2018
956:from the original on November 19, 2019
488:In March 2022, Slack introduced a new
2935:from the original on February 9, 2019
2707:
2705:
2658:from the original on October 20, 2018
2624:from the original on October 14, 2018
2582:
2580:
2535:from the original on October 17, 2018
2504:from the original on November 5, 2018
2414:from the original on October 14, 2018
2383:from the original on October 13, 2018
2298:from the original on November 2, 2018
2271:from the original on October 25, 2018
1441:from the original on February 4, 2020
1240:from the original on January 21, 2021
990:from the original on February 4, 2020
891:from the original on December 3, 2013
787:from the original on November 2, 2018
760:from the original on January 29, 2021
707:from the original on October 31, 2019
7:
2791:from the original on January 6, 2019
2371:Griffith, Erin (February 12, 2015).
1584:Johnson, Heather A. (January 2018).
1502:from the original on January 4, 2021
1472:from the original on January 5, 2021
1337:Goswami, Rohan (November 13, 2023).
1107:from the original on October 9, 2018
1074:from the original on August 14, 2018
1009:Mombrea, Matthew (August 15, 2014).
477:In March 2018, Slack partnered with
4255:Android (operating system) software
2883:from the original on March 15, 2019
2163:from the original on August 7, 2020
1996:News Desk, The HRT (May 27, 2018).
1878:Newton, Casey (December 15, 2015).
666:Kumparak, Greg (February 5, 2015).
2824:from the original on March 9, 2017
2777:Silverman, Jacob (December 2016).
2492:Novet, Jordan (October 29, 2015).
2352:from the original on June 26, 2018
2325:from the original on July 20, 2018
2220:from the original on June 26, 2018
2182:Warren, Tom (September 12, 2019).
2004:from the original on June 26, 2018
1977:from the original on June 26, 2018
1522:"Ongoing services outage at Slack"
1429:Greenberg, Andy (March 27, 2015).
1403:MacRae, Duncan (August 19, 2024).
1379:"Box and Slack Expand Partnership"
978:Koetsier, John (August 15, 2013).
944:Kim, Eugene (September 27, 2016).
807:"Manage your language preferences"
680:from the original on April 1, 2019
251:. Slack is primarily offered as a
14:
2909:from the original on May 15, 2020
2843:Peterson, Becky (July 26, 2017).
2746:Reitman, Rainey (July 10, 2017).
2555:"Form S-1 Registration Statement"
2445:from the original on May 15, 2020
2402:Kim, Eugene (February 12, 2015).
1779:from the original on May 18, 2020
1723:from the original on June 9, 2020
1377:Sophy, Joshua (August 15, 2024).
1188:from the original on July 9, 2020
1161:from the original on July 9, 2020
1062:Etienne, Stefan (July 26, 2018).
1035:Sharwood, Simon (March 9, 2018).
750:"Hacklang at Slack: A Better PHP"
748:Sandler, Scott (April 14, 2020).
471:application programming interface
303:On July 26, 2018, Slack acquired
4219:
4218:
2980:Wilkes, Gabriel (May 10, 2018).
2810:Finley, Klint (March 16, 2016).
2565:from the original on May 1, 2019
2208:Novet, Jordan (April 20, 2015).
1093:Kumparak, Greg (July 26, 2018).
564:(launched by Facebook in 2016),
48:
2646:Fischer, Molly (May 17, 2017).
2433:Welch, Chris (April 16, 2015).
2344:Fingas, Jon (August 14, 2013).
2317:Chen, Dave (January 20, 2017).
2267:. freeCodeCamp. June 21, 2015.
2099:Pierce, David (June 22, 2022).
1825:Augustine, Ann (May 19, 2018).
1798:Gannes, Liz (August 14, 2013).
1687:"How to set up a Slack account"
1126:Erin Griffith (June 20, 2019).
510:Slack provides mobile apps for
329:On December 1, 2020, Slack and
2752:Electronic Frontier Foundation
2721:Electronic Frontier Foundation
2523:Newton, Casey (May 22, 2018).
2464:Metz, Rachel (June 25, 2015).
1744:"Convert a channel to private"
1633:Crook, Jordan (July 9, 2015).
1460:Lyons, Kim (January 4, 2021).
1259:Levy, Ari (December 1, 2020).
727:"Desktop Application Engineer"
699:Zax, David (August 14, 2013).
647:List of collaborative software
616:Electronic Frontier Foundation
16:Messaging software application
1:
2290:Kim, Eugene (June 22, 2015).
2240:"Slack paid vs. free | Slack"
1965:Coop, Alex (March 26, 2018).
1661:"Slack paid vs. free | Slack"
1563:Ax Sharma (January 5, 2023).
1207:Miller, Ron (June 30, 2021).
1149:Konrad, Alex (July 8, 2020).
572:and Meet (launched in 2018).
360:Outages and security breaches
3048:Slack as a Social Media Tool
2125:Roth, Emma (March 7, 2023).
1635:"Slack Adds Emoji Reactions"
1180:Miller, Ron (July 8, 2020).
4290:Project management software
3998:project management software
2587:Molla, Rani (May 1, 2019).
415:converted interchangeably.
96:; 11 years ago
4321:
2717:"The Revolution and Slack"
243:, which has been owned by
32:
25:
18:
4214:
3468:Windows Messenger service
614:The digital rights group
374:two-factor authentication
247:since 2020. Slack uses a
179:
47:
4295:Task management software
2779:"Big Bother Is Watching"
2466:"Slack Keeps On Growing"
483:human capital management
33:Not to be confused with
3035:. American Public Media
2635:(subscription required)
2294:. BusinessInsider.com.
69:, and Serguei Mourachov
4300:Windows Phone software
4265:Collaborative software
4260:Business chat software
737:on September 13, 2015.
320:direct public offering
199:Collaborative software
2471:MIT Technology Review
1602:10.5195/jmla.2018.315
1383:Small Business Trends
607:Awards, organized by
3907:Presence information
1366:. November 13, 2023.
635:free and open-source
570:Google Hangouts Chat
568:(launched 2017) and
253:business-to-business
26:For other uses, see
2408:BusinessInsider.com
1498:. January 4, 2021.
1409:Marketing Tech News
950:UK Business Insider
580:In March 2015, the
494:share their screens
279:Internet Relay Chat
265:Stewart Butterfield
63:Stewart Butterfield
44:
3720:Skype for Business
3567:Facebook Messenger
3363:Facebook Messenger
2931:. March 22, 2018.
2905:. March 22, 2018.
2620:. March 25, 2015.
1318:. December 5, 2022
1138:on March 15, 2021.
1132:The New York Times
481:, a financial and
403:Slack offers many
343:Whitney Wolfe Herd
241:Slack Technologies
80:Slack Technologies
58:Original author(s)
21:Slack Technologies
4232:
4231:
4112:Remember the Milk
4077:Microsoft Planner
3960:
3959:
3814:
3813:
3226:
3225:
3084:Instant messaging
2879:. June 21, 2015.
2652:New York Magazine
1775:. April 5, 2018.
1748:Slack Help Center
1570:Bleeping Computer
1290:finance.yahoo.com
837:Slack Help Center
754:Slack.engineering
230:
229:
182:List of languages
150:Microsoft Windows
65:, Eric Costello,
4312:
4305:Windows software
4222:
4221:
4097:Novell GroupWise
3987:
3980:
3973:
3964:
3912:RingCentral Glip
3497:
3101:
3077:
3070:
3063:
3054:
3044:
3042:
3040:
3027:"What Is Slack?"
3020:
3015:
3014:
3012:Official website
2997:
2996:
2994:
2992:
2977:
2971:
2970:
2968:
2966:
2951:
2945:
2944:
2942:
2940:
2925:
2919:
2918:
2916:
2914:
2899:
2893:
2892:
2890:
2888:
2873:
2867:
2866:
2864:
2862:
2850:Business Insider
2840:
2834:
2833:
2831:
2829:
2807:
2801:
2800:
2798:
2796:
2774:
2768:
2767:
2765:
2763:
2743:
2737:
2736:
2734:
2732:
2709:
2700:
2699:
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2663:
2643:
2637:
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2633:
2631:
2629:
2610:
2604:
2603:
2601:
2599:
2584:
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2572:
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2520:
2514:
2513:
2511:
2509:
2489:
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2455:
2454:
2452:
2450:
2430:
2424:
2423:
2421:
2419:
2399:
2393:
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2390:
2388:
2368:
2362:
2361:
2359:
2357:
2341:
2335:
2334:
2332:
2330:
2321:. DaveChen.net.
2314:
2308:
2307:
2305:
2303:
2287:
2281:
2280:
2278:
2276:
2261:
2255:
2254:
2252:
2250:
2236:
2230:
2229:
2227:
2225:
2205:
2199:
2198:
2196:
2194:
2179:
2173:
2172:
2170:
2168:
2151:Foley, Mary Jo.
2148:
2142:
2141:
2139:
2137:
2122:
2116:
2115:
2113:
2111:
2096:
2090:
2089:
2087:
2085:
2071:
2065:
2064:
2062:
2060:
2045:
2039:
2038:
2036:
2034:
2020:
2014:
2013:
2011:
2009:
1993:
1987:
1986:
1984:
1982:
1962:
1956:
1955:
1953:
1951:
1932:
1926:
1925:
1923:
1921:
1906:
1900:
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1875:
1869:
1868:
1866:
1864:
1849:
1843:
1842:
1840:
1838:
1822:
1816:
1815:
1813:
1811:
1795:
1789:
1788:
1786:
1784:
1765:
1759:
1758:
1756:
1754:
1739:
1733:
1732:
1730:
1728:
1717:Business Insider
1708:
1702:
1701:
1699:
1697:
1682:
1676:
1675:
1673:
1671:
1657:
1651:
1650:
1648:
1646:
1630:
1624:
1623:
1621:
1581:
1575:
1574:
1560:
1554:
1553:
1552:. July 26, 2022.
1546:
1540:
1539:
1538:. March 9, 2022.
1532:
1526:
1525:
1518:
1512:
1511:
1509:
1507:
1488:
1482:
1481:
1479:
1477:
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1219:
1204:
1198:
1197:
1195:
1193:
1177:
1171:
1170:
1168:
1166:
1146:
1140:
1139:
1134:. Archived from
1123:
1117:
1116:
1114:
1112:
1090:
1084:
1083:
1081:
1079:
1059:
1053:
1052:
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1025:
1023:
1021:
1006:
1000:
999:
997:
995:
975:
966:
965:
963:
961:
941:
935:
934:
932:
930:
907:
901:
900:
898:
896:
880:
874:
873:
871:
869:
863:Business Insider
854:
848:
847:
845:
843:
833:"What is Slack?"
828:
822:
821:
819:
817:
803:
797:
796:
794:
792:
776:
770:
769:
767:
765:
745:
739:
738:
733:. Archived from
723:
717:
716:
714:
712:
696:
690:
689:
687:
685:
663:
588:Microsoft Office
490:voice conference
386:Outlook Calendar
376:to its service.
352:In August 2024,
226:
223:
145:Operating system
104:
102:
97:
94:August 2013
52:
45:
4320:
4319:
4315:
4314:
4313:
4311:
4310:
4309:
4235:
4234:
4233:
4228:
4210:
4181:
4107:Priority Matrix
4082:Microsoft To Do
4000:
3994:Task management
3991:
3961:
3956:
3830:
3810:
3801:Microsoft Teams
3787:
3739:
3636:
3500:Single protocol
3488:
3482:
3423:Textfree/Pinger
3283:Google Messages
3222:
3189:
3141:Signal Protocol
3092:
3086:
3081:
3038:
3036:
3024:
3010:
3009:
3006:
3001:
3000:
2990:
2988:
2979:
2978:
2974:
2964:
2962:
2961:. June 18, 2021
2953:
2952:
2948:
2938:
2936:
2927:
2926:
2922:
2912:
2910:
2901:
2900:
2896:
2886:
2884:
2875:
2874:
2870:
2860:
2858:
2842:
2841:
2837:
2827:
2825:
2809:
2808:
2804:
2794:
2792:
2787:. No. 33.
2776:
2775:
2771:
2761:
2759:
2745:
2744:
2740:
2730:
2728:
2711:
2710:
2703:
2693:
2691:
2676:
2675:
2671:
2661:
2659:
2645:
2644:
2640:
2634:
2627:
2625:
2618:Financial Times
2612:
2611:
2607:
2597:
2595:
2586:
2585:
2578:
2568:
2566:
2553:
2552:
2548:
2538:
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2522:
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2517:
2507:
2505:
2498:VentureBeat.com
2491:
2490:
2486:
2476:
2474:
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2166:
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2150:
2149:
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2133:
2124:
2123:
2119:
2109:
2107:
2098:
2097:
2093:
2083:
2081:
2073:
2072:
2068:
2058:
2056:
2047:
2046:
2042:
2032:
2030:
2022:
2021:
2017:
2007:
2005:
1995:
1994:
1990:
1980:
1978:
1964:
1963:
1959:
1949:
1947:
1934:
1933:
1929:
1919:
1917:
1908:
1907:
1903:
1893:
1891:
1877:
1876:
1872:
1862:
1860:
1859:. July 23, 2015
1851:
1850:
1846:
1836:
1834:
1824:
1823:
1819:
1809:
1807:
1797:
1796:
1792:
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1741:
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1726:
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1710:
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1632:
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1627:
1583:
1582:
1578:
1562:
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1543:
1534:
1533:
1529:
1520:
1519:
1515:
1505:
1503:
1490:
1489:
1485:
1475:
1473:
1459:
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1454:
1444:
1442:
1428:
1427:
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1413:
1411:
1402:
1401:
1397:
1387:
1385:
1376:
1375:
1371:
1362:
1361:
1357:
1347:
1345:
1336:
1335:
1331:
1321:
1319:
1310:
1309:
1305:
1295:
1293:
1292:. July 21, 2021
1284:
1283:
1279:
1269:
1267:
1258:
1257:
1253:
1243:
1241:
1232:
1231:
1227:
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1215:
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1191:
1189:
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1008:
1007:
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894:
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865:
856:
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839:
830:
829:
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800:
790:
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778:
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773:
763:
761:
747:
746:
742:
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724:
720:
710:
708:
698:
697:
693:
683:
681:
665:
664:
660:
655:
643:
583:Financial Times
578:
566:Microsoft Teams
545:
528:
401:
382:Google Calendar
362:
261:
220:
188:
187:
183:
100:
98:
95:
91:Initial release
38:
31:
24:
17:
12:
11:
5:
4318:
4316:
4308:
4307:
4302:
4297:
4292:
4287:
4285:MacOS software
4282:
4280:Linux software
4277:
4272:
4267:
4262:
4257:
4252:
4247:
4237:
4236:
4230:
4229:
4227:
4226:
4215:
4212:
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4209:
4208:
4205:
4200:
4195:
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4144:
4139:
4134:
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4119:
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4079:
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4024:
4019:
4014:
4008:
4006:
4002:
4001:
3992:
3990:
3989:
3982:
3975:
3967:
3958:
3957:
3955:
3954:
3949:
3944:
3939:
3934:
3932:Videotelephony
3929:
3924:
3922:Status message
3919:
3914:
3909:
3904:
3899:
3894:
3889:
3884:
3879:
3874:
3869:
3864:
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3808:
3803:
3797:
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3765:
3760:
3755:
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3727:
3722:
3717:
3712:
3711:
3710:
3700:
3695:
3690:
3685:
3680:
3675:
3670:
3665:
3660:
3655:
3650:
3644:
3642:
3641:Multi-protocol
3638:
3637:
3635:
3634:
3629:
3624:
3619:
3614:
3609:
3604:
3599:
3594:
3589:
3584:
3579:
3574:
3569:
3564:
3559:
3554:
3549:
3544:
3539:
3534:
3529:
3524:
3519:
3514:
3512:BBM Enterprise
3509:
3503:
3501:
3494:
3484:
3483:
3481:
3480:
3475:
3470:
3465:
3460:
3455:
3450:
3445:
3440:
3435:
3430:
3425:
3420:
3415:
3410:
3405:
3400:
3395:
3390:
3385:
3380:
3375:
3370:
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3355:
3350:
3345:
3340:
3335:
3330:
3325:
3320:
3315:
3310:
3305:
3300:
3295:
3290:
3285:
3280:
3275:
3270:
3265:
3260:
3255:
3250:
3245:
3243:BBM Enterprise
3240:
3234:
3232:
3228:
3227:
3224:
3223:
3221:
3220:
3215:
3214:
3213:
3203:
3197:
3195:
3191:
3190:
3188:
3187:
3182:
3181:
3180:
3175:
3165:
3160:
3159:
3158:
3153:
3143:
3138:
3133:
3128:
3123:
3118:
3113:
3107:
3105:
3098:
3088:
3087:
3082:
3080:
3079:
3072:
3065:
3057:
3051:
3050:
3045:
3021:
3005:
3004:External links
3002:
2999:
2998:
2972:
2946:
2920:
2894:
2868:
2835:
2802:
2769:
2738:
2701:
2669:
2638:
2605:
2576:
2546:
2515:
2484:
2456:
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2394:
2363:
2336:
2309:
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2256:
2231:
2200:
2174:
2143:
2117:
2091:
2066:
2040:
2015:
1988:
1957:
1927:
1901:
1870:
1844:
1817:
1790:
1760:
1734:
1711:John, Steven.
1703:
1677:
1652:
1625:
1596:(1): 148–151.
1576:
1555:
1541:
1527:
1513:
1483:
1452:
1437:. Condé Nast.
1421:
1395:
1369:
1355:
1329:
1303:
1277:
1251:
1225:
1199:
1184:. TechCrunch.
1172:
1141:
1118:
1085:
1054:
1027:
1001:
967:
936:
902:
875:
857:John, Steven.
849:
823:
798:
771:
740:
718:
691:
657:
656:
654:
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650:
649:
642:
639:
577:
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544:
541:
527:
526:Business model
524:
400:
397:
361:
358:
260:
257:
249:freemium model
228:
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15:
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4:
3:
2:
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4278:
4276:
4273:
4271:
4268:
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4261:
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4256:
4253:
4251:
4250:2013 software
4248:
4246:
4243:
4242:
4240:
4225:
4217:
4216:
4213:
4206:
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4063:
4060:
4058:
4055:
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4050:
4048:
4045:
4043:
4040:
4038:
4037:EProductivity
4035:
4033:
4030:
4028:
4025:
4023:
4020:
4018:
4015:
4013:
4010:
4009:
4007:
4003:
3999:
3996:software and
3995:
3988:
3983:
3981:
3976:
3974:
3969:
3968:
3965:
3953:
3950:
3948:
3945:
3943:
3940:
3938:
3937:Voice over IP
3935:
3933:
3930:
3928:
3925:
3923:
3920:
3918:
3915:
3913:
3910:
3908:
3905:
3903:
3902:LAN messenger
3900:
3898:
3895:
3893:
3890:
3888:
3885:
3883:
3880:
3878:
3875:
3873:
3870:
3868:
3865:
3863:
3860:
3858:
3855:
3853:
3850:
3848:
3845:
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1015:Computerworld
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339:Lidiane Jones
335:
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68:
67:Cal Henderson
64:
61:
59:
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51:
46:
40:
36:
29:
22:
4275:IOS software
4186:Discontinued
4131:
4052:Google Tasks
4042:Easy Redmine
3917:SMS language
3877:File sharing
3867:Contact list
3542:HCL Sametime
3448:VK Messenger
3392:
3318:IRC Networks
3037:. Retrieved
3030:
2989:. Retrieved
2985:
2975:
2963:. Retrieved
2958:
2949:
2939:February 10,
2937:. Retrieved
2923:
2913:February 10,
2911:. Retrieved
2897:
2887:February 10,
2885:. Retrieved
2871:
2859:. Retrieved
2848:
2838:
2826:. Retrieved
2815:
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2795:December 11,
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2592:
2567:. Retrieved
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2549:
2537:. Retrieved
2528:
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2506:. Retrieved
2497:
2487:
2475:. Retrieved
2469:
2459:
2447:. Retrieved
2439:TheVerge.com
2438:
2428:
2416:. Retrieved
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2397:
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2191:. Retrieved
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2177:
2165:. Retrieved
2156:
2146:
2136:September 8,
2134:. Retrieved
2130:
2120:
2110:September 8,
2108:. Retrieved
2104:
2094:
2084:September 8,
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2033:September 8,
2031:. Retrieved
2027:
2018:
2006:. Retrieved
1991:
1979:. Retrieved
1970:
1960:
1950:December 28,
1948:. Retrieved
1939:
1930:
1918:. Retrieved
1915:Entrepreneur
1914:
1904:
1892:. Retrieved
1884:TheVerge.com
1883:
1873:
1863:February 15,
1861:. Retrieved
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1847:
1835:. Retrieved
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1751:. Retrieved
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1725:. Retrieved
1716:
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1696:September 8,
1694:. Retrieved
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1668:. Retrieved
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1643:. Retrieved
1628:
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1504:. Retrieved
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1412:. Retrieved
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1398:
1386:. Retrieved
1382:
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1358:
1348:November 14,
1346:. Retrieved
1342:
1332:
1320:. Retrieved
1315:
1306:
1294:. Retrieved
1289:
1280:
1270:September 8,
1268:. Retrieved
1264:
1254:
1242:. Retrieved
1228:
1218:September 8,
1216:. Retrieved
1212:
1202:
1190:. Retrieved
1175:
1163:. Retrieved
1154:
1144:
1136:the original
1131:
1121:
1109:. Retrieved
1098:
1088:
1076:. Retrieved
1067:
1057:
1045:. Retrieved
1030:
1018:. Retrieved
1014:
1004:
992:. Retrieved
983:
958:. Retrieved
949:
939:
927:. Retrieved
915:
910:Honan, Mat.
905:
893:. Retrieved
883:Tam, Donna.
878:
866:. Retrieved
862:
852:
840:. Retrieved
836:
826:
814:. Retrieved
810:
801:
789:. Retrieved
774:
764:February 11,
762:. Retrieved
753:
743:
735:the original
730:
721:
709:. Retrieved
694:
682:. Retrieved
671:
661:
632:
628:
620:
613:
602:
596:
581:
579:
558:
546:
536:freeCodeCamp
529:
509:
503:to launch a
498:
487:
476:
423:Google Drive
420:
417:
413:
402:
390:
378:
363:
351:
336:
328:
324:
317:
302:
291:
287:
282:
272:
267:'s company,
262:
232:
231:
175:12 languages
172:Available in
75:Developer(s)
39:
4147:Taskwarrior
4142:TaskJuggler
4137:TaskCracker
3842:Backchannel
3730:Thunderbird
3278:Google Meet
3273:Google Chat
3032:Marketplace
2991:January 17,
2965:January 17,
2959:VentureBeat
2861:October 13,
2828:October 13,
2784:The Baffler
2762:October 13,
2731:October 13,
2713:Cohn, Cindy
2694:October 13,
2662:October 13,
2628:October 13,
2559:www.sec.gov
2539:October 13,
2508:October 13,
2477:October 13,
2449:October 13,
2418:October 13,
2387:October 13,
2377:Fortune.com
2356:October 13,
2329:October 13,
2302:October 13,
2275:October 13,
2224:October 13,
2214:VentureBeat
2193:December 2,
2008:October 13,
1981:October 13,
1971:IT Business
1936:"Slack API"
1894:October 13,
1837:October 13,
1810:October 13,
1645:October 13,
1445:October 13,
1322:December 5,
1244:January 21,
1111:October 13,
1078:October 13,
1047:October 13,
994:October 13,
984:VentureBeat
960:October 13,
895:October 13,
791:October 13,
711:October 13,
594:. In 2017,
530:Slack is a
520:Apple Watch
447:Crashlytics
443:IBM Bluemix
237:cloud-based
211:Proprietary
4245:Salesforce
4239:Categories
4203:Wunderlist
4122:Rework.com
4087:Monday.com
3882:FirstClass
3753:ChatSecure
3693:Miranda NG
3577:Retroshare
3491:comparison
3368:The Palace
3358:Mattermost
3353:Marco Polo
3136:Retroshare
3095:comparison
3039:August 10,
2683:TechCrunch
2249:August 14,
1857:TechCrunch
1670:August 14,
1506:January 4,
1476:January 5,
1414:August 19,
1388:August 19,
1213:TechCrunch
1100:TechCrunch
1020:August 31,
929:August 30,
816:August 31,
673:TechCrunch
653:References
609:TechCrunch
592:BlackBerry
550:S-1 filing
331:Salesforce
269:Tiny Speck
245:Salesforce
125:TypeScript
121:JavaScript
109:Written in
84:Salesforce
4270:Groupware
4198:Springpad
4172:Workflowy
4152:Taskworld
4117:Reminders
4102:OmniFocus
4072:ManagePro
3725:Telepathy
3668:Centericq
3532:Gadu-Gadu
3328:KakaoTalk
3091:Protocols
2529:The Verge
2244:slack.com
2188:The Verge
2167:April 30,
2131:The Verge
2105:The Verge
1691:The Verge
1665:slack.com
1610:1536-5050
1466:The Verge
1068:The Verge
924:1059-1028
605:Crunchies
576:Reception
562:Workplace
313:Atlassian
139:(backend)
135:, etc.),
35:Slackware
4224:Category
4177:YouTrack
4157:Teamwork
4127:ShotGrid
4062:HeySpace
4057:Habitica
4047:Evernote
4027:Basecamp
4012:Airtable
3942:Web chat
3927:U-Report
3897:Hall.com
3892:Fuze Box
3872:Emoticon
3847:Chat log
3835:See also
3735:Trillian
3715:QIP 2010
3688:Messages
3622:WhatsApp
3602:Telegram
3582:Ricochet
3572:Palringo
3562:Linphone
3527:FaceTime
3507:Baidu Hi
3458:WhatsApp
3438:Trillian
3413:Telegram
3398:Snapchat
3373:Palringo
3308:iMessage
3258:DingTalk
3231:Services
2933:Archived
2907:Archived
2881:Archived
2855:Archived
2822:Archived
2789:Archived
2756:Archived
2725:Archived
2688:Archived
2656:Archived
2622:Archived
2598:June 14,
2563:Archived
2533:Archived
2502:Archived
2443:Archived
2412:Archived
2381:Archived
2350:Archived
2323:Archived
2296:Archived
2269:Archived
2218:Archived
2161:Archived
2002:Archived
1975:Archived
1944:Archived
1888:Archived
1831:Archived
1804:Archived
1777:Archived
1773:NBC News
1753:July 28,
1721:Archived
1639:Archived
1500:Archived
1470:Archived
1439:Archived
1296:July 21,
1238:Archived
1186:Archived
1159:Archived
1105:Archived
1072:Archived
1041:Archived
988:Archived
954:Archived
889:Archived
842:April 1,
785:Archived
758:Archived
705:Archived
684:June 25,
678:Archived
641:See also
597:New York
590:and the
532:freemium
467:chatbots
455:Runscope
399:Features
113:Electron
4032:ClickUp
3857:Circuit
3852:Chatbot
3819:Defunct
3778:Tkabber
3698:Nimbuzz
3663:BitlBee
3587:Session
3537:GroupMe
3522:Element
3487:Clients
3428:Threema
3378:Session
3298:HipChat
3293:Guilded
3288:GroupMe
3268:Element
3263:Discord
3131:MTProto
2059:June 8,
2048:Slack.
1783:June 9,
1742:Slack.
1727:June 9,
1619:5764588
1586:"Slack"
1496:AP NEWS
1192:July 9,
1165:July 9,
831:Slack.
779:Slack.
516:Android
505:ChatGPT
479:Workday
459:Zendesk
431:Dropbox
305:HipChat
259:History
217:Website
206:License
186:(Spain)
166:Android
101:2013-08
99: (
4193:IQTELL
4167:Trello
4162:Things
4092:Notion
4017:Any.do
4005:Active
3952:Yammer
3947:Webcam
3783:Xabber
3703:Pidgin
3683:Kopete
3673:eBuddy
3658:Beeper
3617:WeChat
3592:Signal
3557:Jongla
3453:WeChat
3383:Signal
3323:Jongla
3248:Beeper
3194:Closed
3185:Zephyr
3173:Jingle
3156:SIMPLE
3126:Matrix
2986:Medium
2569:May 7,
1616:
1608:
1155:Forbes
922:
868:May 4,
543:Growth
501:OpenAI
463:Zapier
461:, and
451:GitHub
439:Heroku
427:Trello
409:emojis
393:GitHub
366:hacked
347:Bumble
309:Stride
283:Glitch
274:Glitch
4207:Nitro
4132:Slack
4022:Asana
3887:Flock
3806:Skype
3773:Spark
3763:Gajim
3708:Finch
3678:Jitsi
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