Slack Technologies

Low Continental Public Record

Editorial estimate, not verified fact — Disclaimer

Developer of workplace messaging and enterprise collaboration software

Data Confidence: 87% · Sources: 6 · Last Updated: Sep 18, 2026

Net Worth ▲: $27.7B
Reach ▲: 79.0M people
Power ▲: Slack Technologies commands a global workplace communication infrastructure supporting over 750,000 organizations and an estimated 79 million monthly active users following its $27.7 billion acquisition by Salesforce.
Influence ▲: Slack transformed corporate productivity and workplace culture by popularizing channel-based messaging, workflow automation, and enterprise app integrations adopted by 77% of Fortune 100 companies.
Network ▲: As a key subsidiary within Salesforce's software stack, Slack maintains an integration ecosystem connected with thousands of third-party SaaS platforms and global software developers.
Legacy ▲: Pioneered by Stewart Butterfield and Cal Henderson out of a failed gaming venture, Slack established the modern paradigm for real-time team collaboration software and enterprise chat tools.
Trajectory ▲: Stable — first assessment on record.

About

Slack Technologies, LLC is an American software enterprise founded in 2009 as Tiny Speck by Stewart Butterfield, Cal Henderson, Eric Costello, and Serguei Mourachov. Originally created as an internal messaging tool during the development of a video game, Slack launched publicly in 2013 and rapidly grew into a leading team communication platform used by more than 750,000 organizations globally. In July 2021, Salesforce completed its acquisition of Slack Technologies for $27.7 billion to anchor its digital workforce ecosystem. Operating as a subsidiary of Salesforce, Slack serves tens of millions of active users across over 150 countries.