Slack first started gaining traction around 2014 and primarily competes in the Business Instant Messaging category, where it is ranked #1 in popularity (based on approximately 35,256 reviews).

It is most often used by the Computer Software industry, and typically highest rated by the Computer Software industry. Also, Slack typically has an entry price that varies significantly.

Yummy Software maintains a BUY rating for Slack, with a high level of stability and currently high momentum.