Sourcery

Sourcery began as a Python refactoring tool and has grown into a general AI code reviewer. It reads each pull request, points out issues, and leaves a clear summary so reviewers know where to look first. It also works in the editor, where it suggests cleaner ways to write the same logic, spots duplicated code and nudges you toward simpler structures. Rules can be tuned so it follows the style your team prefers. Sourcery is free for open source and offers paid plans for private repositories. It is a good lightweight choice for small teams that want helpful review without a lot of setup.