Slack (software)

Slack
Original author(s)Stewart Butterfield, Eric Costello, Cal Henderson, and Serguei Mourachov[1]
Developer(s)Slack Technologies
Initial releaseAugust 2013 (2013-08)[2]
Written inElectron (C++, JavaScript, etc.)[3]
Operating systemMicrosoft Windows, macOS, Linux, iOS, Android, Windows Phone,[4] Commodore 64[5]
TypeCollaborative software[6]
LicenseProprietary
Websiteslack.com

Slack is an online messaging app with fancier features.[7] Stewart Butterfield helped create it. It was originally for a video game. But then they just made it a simple messaging app and dropped the video game idea.[8][9] "Slack" stands for "Searchable Log of All Conversation and Knowledge."[10][11]

Slack has a workspace - it's a shared place where a team uses Slack. People can join a workspace if they get an invitation or a special link. Slack uses channels, which are like chat rooms.[12] A channel can be public (anyone in the group can join) or private (only invited people can join).[13] People can also send direct messages to one person or to a small group. A group chat can later become a private channel.[14]

Slack can connect to many other apps, like Google Drive, Trello, Dropbox, and GitHub.[15] It can also connect to calendars and other services.[16]

Slack provides mobile apps for iOS and Android in addition to their web browser client and desktop clients for MacOS, Windows, and Linux (beta).[17][18]

Slack is a freemium product. This means people can use it for free, but some extra features cost money. [19]

Slack uses channels, which are like chat rooms.[20] A channel can be public (anyone in the group can join) or private (only invited people can join).[21] People can also send direct messages to one person or to a small group. A group chat can later become a private channel.[22]

All content, including files, conversations, and people, is searchable within Slack. Users can express their reactions in the form of emojis to any message.[23]

Slack can connect to many other apps, like Google Drive, Trello, Dropbox, and GitHub.[24] It can also connect to calendars and other services.[25] Slack provides mobile apps for iOS and Android in addition to their web browser client and desktop clients for Windows,[26] macOS, and Linux (beta).[27]

References

  1. ↑ Kumparak, Greg (February 5, 2015). "Slack's Co-Founders Take Home The Crunchie For Founder Of The Year". TechCrunch.com. Retrieved October 13, 2018.
  2. ↑ Zax, David. "Flickr Cofounders Launch Slack, An Email Killer". Retrieved October 13, 2018.
  3. ↑ "Desktop Application Engineer". slack.com. Archived from the original on September 7, 2015. Retrieved October 13, 2018.
  4. ↑ Slack. "Slack apps for computers, phones & tablets". Retrieved October 13, 2018.
  5. ↑ Harris, Jeffrey (November 27, 2016). "Slack client for Commodore 64". Retrieved October 13, 2018.
  6. ↑ "Crunchbase - Slack Technologies". Crunchbase. Archived from the original on June 23, 2015. Retrieved October 13, 2018.
  7. ↑ "Shares in workplace software phenom Slack soar 50% in first day of trading". CBS News. Retrieved 20 June 2019.
  8. ↑ Tam, Donna. "Flickr founder plans to kill company e-mails with Slack". Retrieved October 13, 2018.
  9. ↑ Thomas, Owen (August 14, 2013). "Die, Email, Die! A Flickr Cofounder Aims To Cut Us All Some Slack". Retrieved October 13, 2018.
  10. ↑ Kim, Eugene (September 27, 2016). "Slack, the red hot $3.8 billion startup, has a hidden meaning behind its name". UK Business Insider. Retrieved October 13, 2018.
  11. ↑ What is Slack and who uses it
  12. ↑ Chaudhry, Aliya (2022-01-28). "How to set up a Slack account". The Verge. Retrieved 2025-09-16.
  13. ↑ John, Steven. "How to join a Slack channel on desktop or mobile, whether it's public or private". Business Insider. Retrieved 2025-09-16.
  14. ↑ "Slack updated their privacy policy: Now your company can read 'private' messages". NBC News. 2018-04-05. Retrieved 2025-09-16.
  15. ↑ "Flickr Co-Founder Stewart Butterfield Turns to Workplace Communication Tools With Slack". AllThingsD. Retrieved 2025-09-16.
  16. ↑ Tepper, Fitz (2015-07-23). "Slack Integrates With Google Calendar To Add Events To Channels". TechCrunch. Retrieved 2025-09-16.
  17. ↑ "How Slack brought its desktop app to the Windows Store". ZDNET. Retrieved 2025-09-16.
  18. ↑ Warren, Tom (2019-09-12). "Slack launches dark mode for macOS, Windows, and Linux". The Verge. Retrieved 2025-09-16.
  19. ↑ "Slack". slack.com. Retrieved 2025-09-12.
  20. ↑ Chaudhry, Aliya (2022-01-28). "How to set up a Slack account". The Verge. Retrieved 2025-09-12.
  21. ↑ John, Steven. "How to join a Slack channel on desktop or mobile, whether it's public or private". Business Insider. Retrieved 2025-09-12.
  22. ↑ Slack. "Convert a channel to private or public". Slack Help Center. Retrieved 2025-09-12.
  23. ↑ Crook, Jordan (2015-07-09). "Slack Adds Emoji Reactions 👍💥✨". TechCrunch. Retrieved 2025-09-12.
  24. ↑ "Flickr Co-Founder Stewart Butterfield Turns to Workplace Communication Tools With Slack". AllThingsD. Retrieved 2025-09-12.
  25. ↑ Tepper, Fitz (2015-07-23). "Slack Integrates With Google Calendar To Add Events To Channels". TechCrunch. Retrieved 2025-09-12.
  26. ↑ "How Slack brought its desktop app to the Windows Store". ZDNET. Retrieved 2025-09-12.
  27. ↑ Warren, Tom (2019-09-12). "Slack launches dark mode for macOS, Windows, and Linux". The Verge. Retrieved 2025-09-12.

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