BlackBox : Safely store secrets in a VCS repo (i.e. Git, Mercurial, Subversion or Perforce).
Sourcegraph : Sourcegraph Server is a free, self-hosted code search server that integrates with your code host and supports multi-repository, regexp, and diff searc...
git-deploy : Straightforward, Heroku-style, push-based deployment. Your deploys can become as simple as this:
$ git push production master
Beekeeper Studio : Open Source cross-platform SQL Editor and Database Manager. Use Beekeeper Studio to query and manage your relational databases, like MySQL, Postgres, ...
Git Extensions is the only graphical user interface for Git that allows you control Git without using the commandline. It comes with a manual and video tutorials to get you started quickly.