Gerrit

Gerrit is a free, web-based team code collaboration tool that uses Git. This tool is part of Google’s suite of open-source tools. Software developers in a team can review each other’s modifications to their source code using a Web browser and approve or reject those changes. Gerrit simplifies project maintenance by permitting any authorized user …

Subversion

Apache Subversion (SVN) is a free, centralized, and open-source tool that provides enterprise-class centralized version control. Subversion manages files and directories, and the changes made to them, over time. This allows you to recover older versions of your data, or examine the history of how your data changed.

Git

Git is a free, distributed, and open-source version control system used for source code management. Git is used to track changes in the source code, enabling multiple developers to work together asynchronously.