Gogs is a painless self-hosted Git service, similar to GitHub. Runs anywhere Go can compile for: Windows, Mac, Linux, ARM, etc. Has low minimal requirements and can run on an inexpensive Raspberry Pi.

View Gogs On The DevOps Diagram »

Also check out:

The Ultimate DevOps Tool Chest
The DevOps Diagram Generator
DevOps Hot or Not
The Periodic Table of DevOps Tools