companies

Slack

Team messaging platform owned by Salesforce, where Slack AI adds thread summaries, channel recaps, and a growing library of Slackbot AI skills.

Slack began as an internal tool at Tiny Speck, the gaming studio Stewart Butterfield and co-founders started in 2009 before pivoting to the chat product that launched publicly in 2013 and quickly became a default for tech-company communication. Salesforce acquired Slack in 2021 for $27.7 billion, and Slack now operates as a Salesforce business unit rather than an independent public company, headquartered in San Francisco. Salesforce has steadily woven Slack into its broader Agentforce and AI strategy, and by 2026 Slack AI covers conversation and thread summaries, huddle notes, natural-language search, daily channel recaps, and a library of Slackbot skills that customers can extend with their own. Basic summarization is included on paid plans, while the more advanced search and workflow-generation features are reserved for the Business+ and Enterprise+ tiers Salesforce introduced as part of a broader 2025-2026 pricing restructuring.

Founded

2009

Headquarters

San Francisco, United States

Sector

applications