Bitbucket for Slack

Bitbucket offers free source code hosting for Git and Mercurial projects. You can install the Bitbucket Cloud app to manage your code from Slack.

Bitbucket Cloud

With the Bitbucket Cloud bot for Slack, your team can get contextual information about your code repositories and take action without leaving your channel. Visit the Slack App Directory to install. 

Tip: Get the full rundown of Bitbucket Cloud for Slack on Bitbucket's support pages, and check out their blog post.