Octohunt - Search to find developers in your city on Github.
GitHub + Slack Integration - Full visibility into your GitHub projects right inside Slack
CodeFlower - CodeFlower visualizes source code repositories using an interactive tree.
Cryotos - #1 Maintenance Management Software
SyntaxDB - Easily look up programming syntax for multiple languages
Codacy - Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.