Gerrit Code Review (gerrit.googlesource.com)

Gerrit Code Review is an open-source web-based code review system for Git repositories. It solves the problem of managing and reviewing code changes in collaborative software development by providing a structured workflow where developers can submit patches, reviewers can comment and approve changes, and project maintainers can merge approved code into the main branch. The platform is built around a review-then-push model, ensuring that all changes are vetted before integration.

The system includes a core review engine with support for inline comments, patch sets, and approval workflows. It offers a wide range of plugins and modules for extended functionality, including analytics, automated code review with AI, CI system integration, code ownership management, and multi-site replication. The platform integrates with Elasticsearch and OpenSearch for indexing, supports various authentication methods like OAuth and LDAP, and provides REST and SSH APIs for automation. It also includes tools for monitoring with Prometheus and Grafana, and can be deployed on Kubernetes or as a Docker container.

Gerrit is designed for development teams and organizations that need a robust, scalable code review process, particularly those working with large codebases or distributed teams. The software is open-source and free to use, with no licensing fees. It is available as a self-hosted solution, and the source code and plugins are publicly accessible for download and deployment.