10 Best Code Review Tools of 2026

1. 1

   GitHub Pull Requests

   Pull request review built into GitHub, with required reviewers, code owners and draft pull requests on paid plans.

   9.5overall

   Pull request review built into GitHub, with required reviewers, code owners and draft pull requests on paid plans.

   Best formost engineering teams already hosting code on GitHub

   Adoption data

   225M+GitHub's company page lists more than 225 million developers, 4 million organizations and 800 million repositories.

   GitHub, About GitHub (2026): “225M+ Developers 4M+ Organizations 800M+ Repositories”

   GitHub pull requests are where most code review happens in 2026. GitHub's company page lists more than 225 million developers and 4 million organizations, so contributors rarely need a new account to review. The Free plan covers pull requests, but code owners only apply to public repositories there. The Team plan, at $4 per user per month, adds multiple reviewers per pull request, draft pull requests, code owners, required reviewers and repository rules for private code, plus 3,000 CI/CD minutes a month so checks can gate merges. Code owners automatically request a review, or require approval, when someone changes the files they own, which is the core of most enforcement setups. Enterprise costs $21 per user per month. The gaps are workflow ones: there is no native stacking, and teams that want per-file sign-off or AI comments add tools such as Graphite, Reviewable or CodeRabbit. We compared documented features and published prices.

   Strengths

   • +Team seat at $4 per user per month is one of the lowest prices on this list
   • +Largest published developer base here, at 225M+ developers
   • +Review, CI and branch rules live in the same pull request

   Limitations

   • −Code owners and required reviewers for private repositories need a paid plan
   • −Enterprise at $21 per user is a large jump from Team
   • −No built-in stacked pull request workflow like Graphite's

   SummaryGitHub Pull Requests is the best choice for most teams because the $4 Team plan adds required reviewers and code owners where developers already work. Add a specialist tool only for stacking, per-file sign-off or AI review.

2. 2

   GitLab Merge Requests

   Merge request review in GitLab, with configurable approval rules and code owners on Premium and Ultimate.

   8.5overall

   Merge request review in GitLab, with configurable approval rules and code owners on Premium and Ultimate.

   Best forteams that want approval rules, CI/CD and security scanning in one product

   Adoption data

   50 millionGitLab estimates it has over 50 million registered users, according to its company page.

   GitLab, About GitLab (2026): “Estimated registered users Over 50 million”

   GitLab merge requests are the strongest built-in alternative to GitHub when enforcement matters. GitLab's docs say Free lets anyone with the Developer role approve, but those approvals are optional and do not prevent merging. Premium and Ultimate add required rules for the number and type of approvals, code owners for specific files, and approval settings at the group or instance level, which suits companies that need one policy across hundreds of projects. Ultimate can also require security approvals for merge requests that affect security posture. Premium costs $29 per user per month billed annually and includes 10,000 compute minutes a month plus $12 in GitLab Credits per user for AI features, so pipelines and review live in one place. GitLab estimates over 50 million registered users. The trade-off is price: a team that only needs required reviewers pays far less on GitHub or Bitbucket. We compared documented features and published prices.

   Strengths

   • +Approval rules can be set per project, per group or for the whole instance
   • +Review, CI/CD and security scanning results appear in the same merge request
   • +Available as GitLab.com, Self-Managed or Dedicated

   Limitations

   • −On GitLab Free, approvals are optional and do not block merging
   • −Premium at $29 per user billed annually costs about seven times GitHub Team
   • −Free plan is capped at 5 users per top-level group

   SummaryGitLab Merge Requests is the best choice for teams that must enforce approval rules across many projects because Premium supports group and instance-level approval settings. Teams that only need basic required reviews will pay less elsewhere.

3. 3

   Bitbucket

   Atlassian's Git host with pull request review, Pipelines CI/CD and Jira integration.

   8.4overall

   Atlassian's Git host with pull request review, Pipelines CI/CD and Jira integration.

   Best forteams that plan work in Jira and want the lowest per-seat price

   Adoption data

   15 millionAtlassian says 15 million developers build on Bitbucket.

   Atlassian, Bitbucket (2026): “15 million developers build on Bitbucket”

   Bitbucket is the low-cost way to review pull requests, especially for teams already in Jira. Atlassian says 15 million developers build on it. The Free plan covers up to 5 users with unlimited public and private repositories, 1 GB of LFS storage and 50 Pipelines build minutes, which is enough for a small team to try a review workflow. Standard costs $3.65 per user per month, the lowest paid seat among the large hosts on this list. The catch for anyone enforcing quality is that enforced merge checks sit on Premium at $8 per user per month, alongside IP allowlisting, deployment permissions and required two-step verification. Even at $8, Premium still costs half of GitHub Team plus a dedicated review add-on. Companies with strict data rules can run the self-managed Data Center edition. We compared documented features and published prices; the add-on ecosystem for review is smaller than GitHub's.

   Strengths

   • +Standard at $3.65 per user per month is the cheapest paid seat among the big hosts
   • +Free for teams of up to 5 users
   • +Native link to Jira issues from pull requests

   Limitations

   • −Enforced merge checks need Premium at $8 per user per month
   • −Free plan includes only 1 GB of LFS storage
   • −Fewer third-party review add-ons than GitHub

   SummaryBitbucket is the best choice for Jira teams on a budget because Standard costs $3.65 per user per month. Budget for Premium at $8 if you need merge checks that block merging.

4. 4

   CodeRabbit

   AI code reviewer that comments on pull requests and also reviews in the CLI, IDE and coding-agent loops.

   8.4overall

   AI code reviewer that comments on pull requests and also reviews in the CLI, IDE and coding-agent loops.

   Best forteams adding AI review on top of GitHub or GitLab

   Adoption data

   17K customersCodeRabbit's homepage says it is trusted by 17,000 customers and used on 6 million repositories.

   CodeRabbit, CodeRabbit homepage (2026): “Trusted by 17K customers 6M Repositories”

   CodeRabbit is the most widely adopted AI reviewer we found with a published figure: its homepage says 17,000 customers and 6 million repositories. It installs on GitHub or GitLab and comments on every pull request with a plain-language summary and walkthrough, and it can also review before the PR in the CLI, the IDE or a coding agent's loop. For quality enforcement, pre-merge checks turn custom requirements into gates, and slop detection flags low-quality AI-generated pull requests. Essentials costs $24 per developer per month billed annually or $30 monthly, Team is $48 and adds unit test generation and a prioritized PR queue, and Advanced is $72. Public repositories are reviewed free. Watch the usage terms: Essentials includes 5 PR reviews per developer each hour, and continued reviews cost $0.25 per reviewed file. CodeRabbit complements a host rather than replacing it. We compared documented features and published prices.

   Strengths

   • +Free reviews forever for public repositories
   • +Pre-merge checks let teams turn written standards into merge gates
   • +14-day trial on every paid plan

   Limitations

   • −Essentials includes 5 PR reviews per developer each hour; extra reviews cost $0.25 per reviewed file
   • −Essentials works across 1 linked repository for context
   • −An add-on cost on top of your Git host's seats

   SummaryCodeRabbit is the best choice for teams that want an AI reviewer because pre-merge checks and PR summaries come with a $24 Essentials seat. It adds to, rather than replaces, your Git host.

5. 5

   Gerrit Code Review

   Open source, patchset-based code review for Git with fine-grained permissions.

   8.0overall

   Open source, patchset-based code review for Git with fine-grained permissions.

   Best forlarge self-hosted projects that want strict, patch-by-patch review

   Gerrit takes a different approach from pull requests. Each change is uploaded as a patchset, reviewed and iterated on, and only then applied, which the project compares to the mailing list workflow used by Git and the Linux kernel. That suits teams that want every commit reviewed on its own. The project describes itself as 100 percent open source with no licensing fees, so the cost is the servers and the people who run them. For enforcement, Gerrit offers a fine-grained permission model and configurable approval processes, and it integrates with Jenkins so tests gate submission. It is built for scale, with global replication, active-active clustering and zero-downtime upgrades. A REST API and more than 100 community plugins cover integrations. The downside is the learning curve for developers used to GitHub, and Gerrit publishes no user count, so it scores conservatively on adoption. We compared documented features and published prices.

   Strengths

   • +No licensing fees at any scale
   • +Designed to scale to thousands of concurrent developers
   • +Every change is reviewed as a patchset before it lands

   Limitations

   • −You run and upgrade the servers yourself
   • −Patchset workflow differs from the pull request model most developers know
   • −No published user count, so adoption scores conservatively

   SummaryGerrit is the best free choice for large self-hosted projects because its patchset review and fine-grained permissions carry no license cost. Expect to staff its operation.

6. 6

   Graphite

   Code review platform for GitHub with stacked pull requests, AI reviews and a stack-aware merge queue.

   7.8overall

   Code review platform for GitHub with stacked pull requests, AI reviews and a stack-aware merge queue.

   Best forGitHub teams that want small stacked PRs and a merge queue

   Graphite sits on top of GitHub and changes how pull requests are written and reviewed. Its CLI and VS Code extension break large changes into stacked, sequenced pull requests, so authors keep working while earlier pieces wait for review, and a stack-aware merge queue lands them in order. A redesigned PR page and a shared inbox replace GitHub's default review screens. AI reviews flag bugs and suggest fixes before merge, and Graphite Chat can help fix CI failures from the PR page. The Hobby plan is free for personal account repositories. Starter costs $20 per user per month billed annually and covers all GitHub organization repositories, while Team at $40 adds unlimited AI reviews, automations and the merge queue. Enterprise adds ACLs, SAML and GitHub Enterprise Server support. Graphite publishes customer case studies but no user count, so adoption scores lower. We compared documented features and published prices.

   Strengths

   • +Stacking lets authors keep shipping while earlier changes are under review
   • +Free Hobby plan for personal account repositories
   • +Free for the first 30 days with no credit card

   Limitations

   • −Works with GitHub only
   • −Merge queue and unlimited AI reviews need Team at $40 per user
   • −No published customer count

   SummaryGraphite is the best choice for GitHub teams that want smaller, faster reviews because stacked PRs and a merge queue come in one tool. It costs $20 to $40 per user on top of GitHub.

7. 7

   Review Board

   Code, image and document review that works with Git and many older version control systems, self-hosted or as RBCommons.

   7.5overall

   Code, image and document review that works with Git and many older version control systems, self-hosted or as RBCommons.

   Best forteams on Perforce, Subversion or mixed version control

   Review Board, made by Beanbag, is a review tool for teams whose code does not all live in one Git host. It supports Git, Jujutsu, Perforce, Subversion, Mercurial, ClearCase and Azure DevOps, which makes it one of the few options for studios and hardware companies still on centralized version control. It also reviews images, with split, onion skin and color diffs, and documents, so design and spec changes go through the same process. Every review and decision is kept in an audit trail. You can install it on-prem, including air-gapped networks, or use the hosted RBCommons service. RBCommons Basic costs $6 per user per month with 2 integrations, and Business at $12 adds 50 integrations, premium repository support, PDF document review and reports. All plans start with a 30-day free trial. Beanbag publishes no user count, so adoption scores conservatively. We compared documented features and published prices.

   Strengths

   • +Broadest version control support on this list
   • +Reviews images and documents, not only code
   • +RBCommons Basic at $6 per user per month

   Limitations

   • −Premium repositories such as GitHub Enterprise and Bitbucket Data Center need Business at $12
   • −Separate tool from where code is hosted
   • −No published user count

   SummaryReview Board is the best choice for teams on Perforce, Subversion or mixed systems because it reviews code from all of them in one place. Hosted RBCommons starts at $6 per user per month.

8. 8

   Reviewable

   Review tool for GitHub pull requests with per-file tracking and custom completion conditions.

   7.4overall

   Review tool for GitHub pull requests with per-file tracking and custom completion conditions.

   Best forGitHub teams that want stricter rules for when a review is done

   Reviewable replaces GitHub's review screen with one designed for thorough, multi-round reviews. Its main enforcement feature is the completion condition: teams define when a review counts as done, and the Business plan adds custom acceptance criteria, file and folder organization and per-file reviewer assignment. Pricing is unusual and favorable for review-heavy teams, since a contributor is anyone who creates a pull request, and reviewers, admins and reporting users are not counted. Team costs $8 per contributor per month billed annually ($88 a year) with unlimited reviews for all repositories, Business costs $16 and adds SSO/SAML, and Enterprise offers on-prem or dedicated cloud hosting with GitHub Enterprise Server support. Public repositories and personal private repositories are free. Reviewable only works with GitHub and publishes no user count, so it scores low on adoption. We compared documented features and published prices.

   Strengths

   • +Free for all public repositories and personal private repositories
   • +Seat pricing counts PR authors only
   • +Team plan at $8 per contributor per month

   Limitations

   • −GitHub only
   • −Per-file reviewer assignment needs Business at $16
   • −No refunds when you cancel

   SummaryReviewable is the best choice for GitHub teams with many reviewers because only PR authors count as paid contributors at $8 a month. Per-file assignment needs Business.

9. 9

   Gitea

   Lightweight, self-hosted Git platform with pull requests, issues and Gitea Actions CI/CD.

   7.1overall

   Lightweight, self-hosted Git platform with pull requests, issues and Gitea Actions CI/CD.

   Best forteams that want a free self-hosted forge with pull request review

   Gitea is a self-hosted Git platform that gives small and mid-size teams GitHub-style pull requests without a per-seat bill. The open source edition is MIT-licensed and free with unlimited users and repositories, and it bundles issues, project management and Gitea Actions, which is compatible with GitHub Actions workflows, so checks can run before merge. Gitea Enterprise costs $9.5 per user per month with a 1-year commitment, against a $19 list price, and adds SAML SSO, audit logs and supported infrastructure. Gitea Cloud is a fully managed option with a 30-day free trial. As a review tool it covers the basics rather than leading: the documented review controls are lighter than on paid GitHub or GitLab plans, and there is no published user count, so it ranks lower here. It fits teams whose main need is owning their code and keeping costs at zero. We compared documented features and published prices.

   Strengths

   • +Open source edition is free with no user limit
   • +CI/CD and pull requests in one lightweight install
   • +Managed cloud option for teams that do not want to self-host

   Limitations

   • −Fewer review-specific controls than GitHub or GitLab paid plans
   • −Enterprise needs a 1-year commitment
   • −No published user count

   SummaryGitea is the best choice for teams that want pull request review on their own servers at no license cost because the MIT edition has no user limit. Larger teams needing strict approval rules should look at GitLab or Gerrit.

10. 10

    SmartBear Collaborator

    Peer review tool for code, documents and models with defect tracking and compliance reporting.

    6.6overall

    Peer review tool for code, documents and models with defect tracking and compliance reporting.

    Best forregulated industries that need review audit trails

    SmartBear Collaborator is built for teams that must prove their reviews happened. Reviewers mark defects directly on changed lines and categorize them by type and severity, and Collaborator reports defect density, inspection rates and lines covered, so process owners can measure review quality. Custom templates, checklists and participant rules standardize how each project is reviewed, and when an auditor asks, reviews can be saved to a zip file. Beyond code, it handles requirements, design docs and test cases in Word, Excel, PowerPoint, Visio, PNG and PDF formats. SmartBear says it integrates with 11 source control systems and supports GitHub pull requests. SmartBear targets automotive, aerospace and defense, healthcare and financial services. The Team edition is sold in 5 user packs for up to 25 users, with an Enterprise license for larger organizations; the pricing page showed EUR rather than USD when we checked, so the USD price is pending. We compared documented features and published prices.

    Strengths

    • +Built for safety and regulatory compliance reviews
    • +Reviews saved to a zip file for external audits
    • +Reviews documents and models as well as code

    Limitations

    • −Team licenses come in 5 user packs, up to 25 users
    • −USD prices not shown on the pricing page as we fetched it
    • −No published user count

    SummarySmartBear Collaborator is the best choice for regulated teams because defect metrics and exportable review records support external audits. Most product teams will find a Git host's review sufficient and cheaper.

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