GitHub + Slack Integration - Full visibility into your GitHub projects right inside Slack
Stack Overflow for Teams - Everything you love about Stack Overflow in a private space.
Stack Overflow Documentation - A crowdsourced developer documentation
ask-stack - Get answers from Stack Overflow directly in the Atom editor
Mercurial SCM - Mercurial is a free, distributed source control management tool.
Documentation Agency - We write your product or library documentation.