Source control and code management.

About GitHub

GitHub offers online source code hosting for Git projects, with powerful collaboration, code review, and issue tracking.

This integration will post commits, pull requests, and activity on GitHub Issues to a channel in Slack.

Alternatives to GitHub

GitHub is listed in: Source Control

Free source code hosting for Git and Mercurial.
Collaborate and manage software projects online.
A programmer's best friend, now in Slack.
The Subversion software source control package. posts repository events to your Slack channels
Custom rules for Github repos and violation monitoring
On-premise source code management for Mercurial, Git & SVN reviews applications which integrate with Slack, and is not created by, affiliated with, or supported by Slack Technologies, Inc.