|Initial release||2 November 2009(independent release, labelled version 2)|
|Platform||Java Platform, Enterprise Edition|
|License||Apache License 2.0|
Gerrit (// GERR-it) is a free, web-based team code collaboration tool. Software developers in a team can review each other's modifications on their source code using a Web browser and approve or reject those changes. It integrates closely with Git, a distributed version control system.
Gerrit is a fork of Rietveld, a code review tool for Subversion. Both are namesakes of Dutch designer Gerrit Rietveld.
Originally written in Python like Rietveld, it is now written in Java (Java EE Servlet) with SQL since version 2 and a custom-made Git-based database (NoteDb) since version 3.
In versions 2.0–2.16 Gerrit used Google Web Toolkit for its browser-based front-end. After being developed and used in parallel with GWT for versions 2.14–2.16, a new Polymer web UI replaced the GWT UI in version 3.0.