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Slack (software)

Slack
Slack Technologies Logo.svg
Original author(s) Stewart Butterfield, Eric Costello, Cal Henderson, and Serguei Mourachov
Developer(s) Slack Technologies
Initial release August 2013; 3 years ago (2013-08)
Stable release

Mobile applications:
iOS 3.6.0 (September 13, 2016; 5 months ago (2016-09-13))
Android 2.18.0 (September 26, 2016; 4 months ago (2016-09-26))
Desktop applications:
Microsoft Windows 2.2.1 (September 17, 2016; 5 months ago (2016-09-17))
macOS 2.4.1 (January 10, 2017; 41 days ago (2017-01-10))
Chrome OS 1.0.3 (December 6, 2013; 3 years ago (2013-12-06))
Beta applications:
Windows Phone 2016.913.0.0 (September 13, 2016; 5 months ago (2016-09-13))

Linux 2.2.1
Development status Active
Written in Electron (C++, JavaScript, ECMAScript, etc.)
Operating system Windows, macOS, Linux, iOS, Android, Windows Phone,Commodore 64
Platform Cross-platform
Type Collaborative software
License Proprietary
Website slack.com

Mobile applications:
iOS 3.6.0 (September 13, 2016; 5 months ago (2016-09-13))
Android 2.18.0 (September 26, 2016; 4 months ago (2016-09-26))
Desktop applications:
Microsoft Windows 2.2.1 (September 17, 2016; 5 months ago (2016-09-17))
macOS 2.4.1 (January 10, 2017; 41 days ago (2017-01-10))
Chrome OS 1.0.3 (December 6, 2013; 3 years ago (2013-12-06))
Beta applications:
Windows Phone 2016.913.0.0 (September 13, 2016; 5 months ago (2016-09-13))

Slack is a cloud-based team collaboration tool founded by Stewart Butterfield. Slack began as an internal tool used by their company, Tiny Speck, in the development of Glitch, a now defunct online game. The name is an acronym for "Searchable Log of All Conversation and Knowledge".

Slack was launched in August 2013. In January 2015, Slack announced the acquisition of Screenhero.

In March 2015, Slack announced that it was hacked over the course of four days in February 2015, and that some number of users’ data was compromised. That data included email addresses, usernames, encrypted passwords, and, in some cases, phone numbers and Skype IDs that users had associated with their accounts. In response, Slack added two-factor authentication to their service.

While no longer using an IRC backend, Slack offers a lot of IRC-like features: persistent chat rooms (channels) organized by topic, as well as private groups and direct messaging (again, historically based on IRC). All content inside Slack is searchable, including files, conversations, and people. Slack integrates with a large number of third-party services and supports community-built integrations. Major integrations include services such as Google Drive, Trello, Dropbox, Box, Heroku, IBM Bluemix, Crashlytics, GitHub, Runscope and Zendesk. In December 2015, Slack announced their app directory, consisting of over 150 integrations that users can install. Users can add emoji buttons to their messages, which other users can then click on to express their reactions to messages.


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