Slack was founded in 2013 by Stewart Butterfield, Eric Costello, Cal Henderson, and Serguei Mourachov. Interestingly, the tool was born out of a failed gaming project called “Glitch.” While the game didn’t succeed, the internal communication system the team developed turned out to be far more valuable. That system evolved into Slack short for “Searchable Log of All Conversation and Knowledge.”
Initially launched as a messaging tool for teams, Slack quickly gained popularity for its clean interface, real-time messaging, and powerful integrations with other workplace tools. It offered a flexible alternative to email, allowing teams to organize conversations into channels and collaborate more efficiently.
Today, Slack is widely used by businesses of all sizes, from startups to global enterprises. It supports voice and video calls, app integrations, file sharing, and more all in one unified platform. In 2021, Salesforce acquired Slack in a major tech deal, recognizing its central role in the future of digital workspaces.
Slack changed the way teams communicate by making work conversations faster, more transparent, and easier to manage. It didn’t just replace email it helped redefine modern teamwork by creating a digital office hub for the remote and hybrid age.