Review Board is a web-based, open source tool for code review. To test this code review tool, you can either explore the demo on their website or download and set up the software on your server

The Python programming language and its installers, MySQL or PostgreSQL as a database, and a web server are the prerequisites to run Review Board on a server.

You can integrate Review Board with a wide range of version control systems — Git, Mercurial, CVS, Subversion and Perforce. You can also link Review Board to Amazon S3 for storing screenshots directly in the tool.