Gerrit
open-source
Web-based code review tool for Git repositories with integration into CI/CD and access control.
Open source code review tools to evaluate in 2026
Open source code review tools gives teams full code access, no per-user licensing, and the freedom to self-host, but operational cost replaces license cost. These are the open source options in this category, followed by the full list for comparison.
4 of 9 products in this category match the open source filter and are highlighted below.
Back to all Code Review Tools tools, or browse the full software directory. You can also run head-to-head comparisons or read about our review methodology.
For background on scoring, see how rankings work. Our editorial articles add deeper analysis, the glossary clarifies vendor terminology, and our calculators help estimate ROI before the shortlist narrows further.
Open source options
GitLab
Per-user · Cloud / On-prem · Free trial
GitLab keeps source control, pipelines, a container registry, security scanning and project tracking inside one application instead of five integrated ones. The self-hosted edition is the real decider for organizations under data sovereignty rules that stop source code from residing in someone else's cloud, and it is licensed per user either way.
Phabricator
open-source
Open-source code review and project management suite with Differential for pre-commit review workflows.
Review Board
open-source
Open-source web-based code review tool with diff viewing, commenting, and CI integration.
Other code review tools
The rest of the code review tools category, listed because the open source filter above did not select them. Worth reading when the highlighted options do not fit.
Azure DevOps
Per-user · Cloud · Free trial
Source control, build and release pipelines, work item boards, and test plans sit inside one Microsoft suite. That makes Azure DevOps behave as a platform, not a collection of point products. Organizations already inside the Microsoft ecosystem often start here on licensing proximity to subscriptions they already hold. It scales from small teams up to complex multi-project enterprise setups.
Bitbucket
Per-user · Cloud · Free trial
For a shop already running Jira and Confluence, Bitbucket is the path of least resistance: issue-to-pull-request linking works natively, Pipelines covers CI/CD without a third-party runner, and the bill arrives per user on Atlassian's cloud. Outside that ecosystem the calculation changes, since GitHub and GitLab carry broader community ecosystems around them.
Crucible
subscription
Collaborative code review tool for Subversion, Git, Mercurial, CVS, and Perforce repositories.
GitHub
Per-user · Cloud · Free trial
Code hosting and code review here have become the default for open source and enterprise software teams alike. GitHub Actions lives in the same platform, so CI/CD work does not mean switching context to a separate system. Access controls and audit logs on the enterprise plan cover most security and compliance requirements, and seats are priced per user.
Upsource
subscription
Code review and repository browser with automated code inspections and IDE integration.
Common questions about open source code review tools
Is open source code review tools really free?
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The license is free, but hosting, maintenance, patching, and upgrades replace the vendor's license fee. Teams without dedicated ops resources often spend more on self-managed open source than on a managed commercial alternative.
When should I choose open source over commercial code review tools?
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Open source is strongest when you need full code control, on-premises deployment for compliance, or want to avoid vendor lock-in. It is weaker when your team lacks the ops capacity to maintain, patch, and scale the deployment.
What should I check before deploying open source code review tools?
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Check community activity (commits, issues, and releases in the last six months), commercial support options, documentation quality, and the total operational burden against a managed alternative. A dormant project with no commercial backing is a risk.