TechCrunch
Big news today for Stewart Butterfield and Slack, his enterprise collaboration app. It’s raised $42.75 million, led by new investor The Social+Capital Partnership, with the participation of existing Tiny Speck investors Accel Partners and Andreessen Horowitz. We first reported news of the funding yesterday, citing sources that said Slack was raising “$30 million plus.” Now it is official. This represents the biggest investment from Social+Capital to date.
Slack has come a long way since launching 10 weeks ago out of limited beta. Competing against the likes of Yammer and Convo, it says it now has 60,000 daily users and 15,000 paid seats. It has picked up a number of high-profile users in that time, including Rdio, Medium, Soundcloud, Heroku, Lonely Planet and BuzzFeed. The main idea with this round is to scale that usage higher.
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