Git Random - Chrome extension to replace new tab with random github user
GitHub + Slack Integration - Full visibility into your GitHub projects right inside Slack
Code Climate for Google Chrome - Code quality and test coverage, directly in GitHub
Stack Overflow Documentation - A crowdsourced developer documentation
Devo - Devo delivers real-time operational & business value from analytics on streaming and historical data to operations.
ask-stack - Get answers from Stack Overflow directly in the Atom editor