Best Open Source DeepSource Alternative in 2026
Last Updated: August 19, 2026
DeepSource is a code review tool built for both developers and AI coding agents. It scans pull requests using thousands of built in rules, then adds an AI agent on top to catch bugs and security issues that simple rules would miss.
Beyond basic code review, it checks for exposed secrets, risky open source dependencies, license problems, and gaps in test coverage. Many of these issues can be fixed automatically through its Autofix feature, which suggests a verified patch you can apply right away.
The best alternative to DeepSource is 
Sourcery
SourceryAI Code Review & Security Scanning.
So, here are the 1 best alternatives to DeepSource:
Sourcery sits inside your IDE and on your pull requests, catching bugs, security issues, and messy code before they slip through. It writes plain summaries, draws diagrams of what changed, and leaves line by line comments you can act on right away.
Inside the editor, it offers real-time refactoring hints, a code quality score for every function, and a chat assistant that understands the files you are working in.
It is free for open source repos with security scans for up to 3 repositories. The Pro plan costs $12 per seat a month and adds private repo reviews plus scanning for 10 repositories.
Team, priced at $24 per seat a month, brings daily scans, repo analytics, and the option to bring your own AI model. Enterprise adds self-hosting and priority support at custom pricing.
Because it clones code only briefly and never trains models on it, teams can adopt it without worrying about their code being stored or reused.