Slack

Slack is a messaging app that enables teams to communicate efficiently, in real-time. You can think about Slack as the modern version of mIRC (the chat client that revolutionized communication in the 90s). Available on desktops and mobile devices, Slack lets you set up highly customizable channels and integrate tools like Google Docs, JIRA, and Salesforce––so you can focus on what matters. The best part is that the more you use Slack, the more it adapts to how you work best.