Sourcetree is a graphical front-end for the Git revision control system. First created in 2005 for the community of Linux kernel developers, Git has become one of the most popular revision control systems among technical people of all kinds. For example, the Library of Congress maintains Git repositories (hosted on GitHub) for a number of projects they are working on. These include XSLT to...

TortoiseHg is a graphical frontend for the Mercurial distributed revision control system. It integrates with the system's file browser and provides context menu entries to manipulate files/folders under revision control. For example, users can right click on a managed folder and select context menu entries to pull new changes from upstream sources, commit their local modifications, push their...