Approved - The better way to get approvals, right inside of Slack
Phabricator - Phacility - Phabricator
ApproveIt for Slack - Get approvals in minutes, not days. Right from Slack!
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Heroku CI - Continuous Integration from Heroku
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.