Skype’s main advantages are its price (free for all features), its notification system (Slack’s is buggy & lacking features), and its audio & video & screen-sharing capabilities. Slack’s main advantages are its integrations, its search capabilities, and its rich messaging.
In our company of over 50 remote employees, communication is critical. For years we’ve been using Skype as one of our primary methods of communication. In the past when we tested out alternatives to Skype (like Hipchat & Sococo), Skype always won.
In part because of Slack’s astronomical growth (launched August 2013, now with over 750,000 daily active users and a recent $2.8 billion valuation), we decided we needed to give it a shot ourselves. Find out more