The Business

Slack has proven that simple tools – built beautifully – can solve even the most vexing problems of team communication. Today, its cross-platform chat and notification tools keep many of the most widely distributed teams in sync. With its marketplace of integrations, users can pull files and data from a spectrum of third-party services to help enrich dialogue and workflow. Slack powers collaboration at companies like the New York Times, NASA and Intuit.

The Partnership

Accel seeded the company in 2009 when it was Tiny Speck, a gaming company building virtual worlds for teens. In August 2013, Stewart Butterfield and his team pivoted to Slack based on an operations tool they’d built internally. Accel has been an active supporter through each round of funding, with Andrew Braccia on the board of directors.