Slack Raises $42.75M

San Francisco-based enterprise communications software developer Slack has raised $42.75M in a Series C funding. The funding came from Social+Capital Partnership, Accel Partners, and Andreessen Horowitz. The funding reportedly valued the company at around $200M. Slack is led by Stewart Butterfield, who was a co-founder of Flickr. Slack was previously known as Tiny Speck. More information »