LightReview!

Review Assistant is a code review plugin for Visual Studio. The code review tool allows creating review requests and responding to them without leaving Visual Studio. Review Assistant supports TFS, Subversion, Git, Mercurial, and Perforce.

Review Board is a web-based collaborative code review tool, available as free software under the MIT License. Review Board can be installed on any server running Apache or lighttpd and is free for both personal and commercial use.

Codebrag is a simple code review tool that makes the process work for your team

Learn more about CodeCollaborator, the industry's first code review tool. Download this lightweight yet robust tool and try it free.