This article was originally published on AI Study Room . For the full version with working code examples and related articles, visit the original post. Best Code Review Tools 2026: GitHub, GitLab, Graphite, Reviewable Compared Code review is where quality happens — or doesn't. The right review tools make the difference between reviews that catch bugs and reviews that are just rubber stamps. Here's how GitHub, GitLab, Graphite, Reviewable, and others compare for real review workflows. Quick Comparison GitHub PRs GitLab MRs Graphite Reviewable Gerrit Best for Most teams (default) GitLab users Stacked PRs, fast-moving teams Thorough, async reviews Stacked diffs No (sequential PRs) No Yes (core feature) Yes (partial) AI review Copilot PR review GitLab Duo In preview No Inline suggestions Yes (commit suggestion) Yes Yes Excellent Review state tracking Basic (requested, reviewed) Good (approval rules) Good Excellent (per-file tracking) GitHub PR Reviews — The Default for Most Teams GitHub's pull request review…