Top 15 Code Review Tools for Improving Software Quality

Code review can be regarded as testing of source code, aiming to find and fix bugs introduced during development, improve overall software quality, and enhance developers' skills. Review processes take many forms, such as pair programming and spot checks. This list compiles the 15 best code review tools to help developers save time on reviews.

1. Gerrit

Gerrit is a web‑based code review system that facilitates online reviews for Git projects. It shows changes side‑by‑side, allows inline comments, and lets authorized users submit changes directly to the master repository, simplifying Git‑based project maintenance.

2. Rietveld

Rietveld, developed by Google, enables users to discuss defects and review code in a collaborative web interface.

3. Crucible

Crucible provides a flexible workflow for reviewing code, supporting Subversion, CVS, Perforce and more, helping teams produce quality code through discussion and defect identification.

4. Codeplex

Codeplex offers a complete solution for team code reviews, leveraging team system benefits to reduce waste.

5. Barkeep

Barkeep is a fast, standalone code review tool that can be hosted on Ubuntu and tracks reviews across any number of Git repositories.

6. Review Assistant

Review Assistant is a Visual Studio plugin that lets you create and respond to review requests without leaving the IDE, supporting TFS, Subversion, Git, Mercurial, and Perforce.

7. CodeStriker

Codestriker is an open‑source web application for online code reviews, supporting diffs from CVS, Subversion, ClearCase, Perforce, Visual SourceSafe and Bugzilla, with a plug‑in architecture for extensions.

8. Code Review Tool

This tool enables collaborative code reviews with reduced overhead, supporting both formal and lightweight review processes.

9. Malevich

Malevich is a web‑based, point‑and‑click review system designed for individuals and small teams, making commenting cheap and encouraging thorough reviews.

10. Code Brag

Codebrag is a simple tool that streamlines the review process for teams.

11. Veracode

Veracode offers automated, on‑demand application security testing and code review, scanning compiled binaries to identify vulnerabilities.

12. Collaborator

Collaborator enables development, testing, and management teams to peer‑review code, user stories, and test plans in a transparent, collaborative framework.

13. Peer Review Plugin

This Trac plugin, written mainly in Python, integrates with Subversion and provides a web‑based environment for asynchronous code reviews using Genshi, JavaScript, and AJAX.

14. Codifferous

Codifferous imports code from BitBucket or GitHub and quickly reads it, offering a fast review experience for busy developers.

15. Phabricator

Phabricator is an open‑source software engineering platform that includes various web applications to help software companies build better software through collaborative reviews.