We launched Slack to the world on February 12th, 2014. Thirteen months after starting work, nine months after releasing our early alpha version, and six months after starting our preview release. We crossed the finish line we'd been sprinting toward for the last year, not fully realizing that we were| Building Slack
By the summer of 2013, we knew we were on to something. The people we’d asked to try Slack – at Silicon Valley tech companies like Rdio, Medium, and ThatGameCompany – were still using it. And they were telling their friends to use it. Small teams within companies started spreading it| Building Slack