*Result*: Source Code Review Systems.

*This article compares two open source tools--Bugzilla and Codestriker--and three commercial tools-the CodeReview add-on for Visual Studio .Net, CodeReviewer, and ReviewPro. Bugzilla is a popular and capable open source bug-tracking system used by hundreds of companies and opensource projects. Netscape originally built it to support Netscape Navigator development but spun it off in 1998 as part of the open source Mozilla Web browser project. Bugzilla has since taken on a life of its own. Bugzilla requires that reviews happen inside an open bug report. When using Bugzilla for reviews, developers enter all feature enhancements as bugs, so that each task performed on a project has an associated bug. Codestriker, written by David Sit--sky in 2001, started out as a simple Web-based review system for patches with a structured issue list. Early versions resembled Bugzilla's current patch-viewing feature. It has since evolved good support for formal inspections with metrics and for inspection meetings. Codestriker, like Bugzilla, is a CGI application written in Perl. The Web server runs on Windows and Unix. However, unlike Bugzilla, it can store data in Oracle, MySQL, PostgreSQL, or Microsoft SQL Server. It can also integrate with many source code control systems, including CVS, Subversion, Clearcase, Visual Source Safe, Perforce and Bugzilla.*