TREX is a code reviewer developed by Greptile that executes code and identifies errors during the review process. It enhances traditional code inspection methods by integrating code execution with pull request reviews.

Open Code Review is an AI-powered command-line interface tool for code review, initially developed for Alibaba Group's internal use. It analyzes Git diffs, provides precise line-level comments, and is compatible with OpenAI and Anthropic models, having identified millions of code defects over two years of operation.

Starting June 1, 2026, GitHub Copilot code review will begin consuming GitHub Actions minutes. This change affects billing for developers and engineering teams using Copilot for code reviews on pull requests.

Sashiko is an open-source agentic AI code review system for the Linux kernel developed by Google engineers. It will continue to perform upstream Linux kernel code reviews with ongoing funding from Google.