Originally known as Tiny Speck, Slack Technologies is a startup that deals in computer software. Slack was founded in the year 2009 and its headquarters are in San Francisco, California, United States. Slack provides services across the globe and is known to be the fastest company to ever receive a billion dollar valuation.
Slack has employees located in Dublin, Vancouver and San Francisco. Slack the software was co-founded by Serguei Mourachov, Stewart Butterfield, Cal Henderson and Eric Costello. Currently used as a team collaboration tool, Slack originally was an internal tool that was used within the company Tiny Speck.