This is a list of collaborative code review software that supports the software development practice of software peer review.

SoftwareMaintainerDevelopment statusLicenseVCS supportedPlatforms supportedWorkflow
CodePeerMNT Labsactively developedProprietaryGitAllpre- and post-commit
CollaboratorSmartBear Softwareactively developedProprietaryGit, Subversion, Perforce, ClearCase, Mercurial, Rational Team Concert, TFS, SynergyLinux, macOS, Windowspre- and post-commit
CrucibleAtlassianin maintenanceProprietaryCVS, Subversion, Git, Mercurial, PerforceJavapre- and post-commit
Dimensions CM PulseUnoMicro Focusactively developedProprietaryDimensions CM, GitLinux, macOS, Windowspre- and post-commit
Helix SwarmPerforceactively developedProprietaryHelix CoreLinux, macOS, Windowspre- and post-commit
Helix TeamhubPerforceactively developedProprietaryGit, Subversion, MercurialLinux, macOS, Windowspre- and post-commit
GerritGoogle, Inc.actively developedApache v2GitJava EEpre-commit
GiteaGiteaactively developedMITGitLinux, macOS, Windowspre- and post-commit
GitHubGitHub, Inc.actively developedProprietaryGitLinux, macOS, Windowspre- and post-commit
GitLabGitLab Inc.actively developedMITGitRuby on Railspre- and post-commit
Kallitheakallithea-scm.orgactively developedGPL v3Git, MercurialPythonpost-commit
KiuwanOptimyth Technologiesactively developedProprietaryCVS, Subversion, Git, MercurialLinux, macOS, Windowspre- and post-commit
PatchworkStephen Finucaneactively developedGPL v2VCS-agnosticPythonmailing list
PhabricatorPhacilityEnd of lifeApacheGit, Subversion, MercurialPHPpre- and post-commit
Rational Team Concert Code ReviewIBMactively developedProprietaryRational Team ConcertLinux, macOS, Windowspre- and post-commit
Review Boardreviewboard.orgactively developedMITCVS, Subversion, Git (partial), Mercurial, Bazaar, Perforce, ClearCase, Plastic SCMPythonpre- and post-commit
RietveldGuido van Rossumactively developedApache v2Git, Subversion, Mercurial, Perforce, CVSPythonpre-commit
RhodeCodeRhodeCodeactively developedAGPL v3Git, Subversion, MercurialPythonpre- and post-commit