What is the best free alternative to Sourcery?
PR-Agent is the closest free alternative to Sourcery: same AI Code Review sub-category, and it is free. Open-source AI reviewer that describes, reviews and suggests improvements on pull requests
Best free Sourcery alternatives
Looking for a free alternative to Sourcery? Here are 9 ai code review worth trying — 5 with a free tier. Sourcery itself is free tier + paid.
| Tool | Sourcery (you searched) | PR-Agent | CodeRabbit | Greptile |
|---|---|---|---|---|
| Pricing | freemium | free | freemium | freemium |
| Best for | AI pull request reviews for GitHub and GitLab with summaries, bug findings and one-click fixes | Open-source AI reviewer that describes, reviews and suggests improvements on pull requests | Agentic AI reviews on PRs and CLI with automated one-click fix suggestions | Free Starter tier with unlimited repositories for individual developers |
| Visit | Open ↗ | Open ↗ | Open ↗ | Open ↗ |
Sourcery alternatives — straight answers
Are there free Sourcery alternatives?
Yes — 5 of the 9 alternatives listed here are free or freemium: PR-Agent, CodeRabbit, Greptile, Eclipse Theia IDE, Gemini CLI. The other 1 are trial or paid.
Is Sourcery free?
Sourcery is free tier + paid. There is a free tier you can work in, with paid plans above it.
How were these Sourcery alternatives chosen?
They are the other tools in AI Code Review, then the rest of Code & Development, ordered free tiers first and capped at 9. There is no sponsorship and no paid placement in that ordering — only the pricing tier decides.
All Sourcery alternatives
Browse AI Code Review →✦ WhyA Sourcery alternative — Open-source AI reviewer that describes, reviews and suggests improvements on pull requests.
- Open-source AI reviewer that describes, reviews and suggests improvements on pull requests
- Runs as a GitHub Action, CLI or self-hosted app with your own LLM key
- Supports GitHub, GitLab, Bitbucket and Azure DevOps
CodeRabbit
AI Code Review
✦ WhyA Sourcery alternative — Agentic AI reviews on PRs and CLI with automated one-click fix suggestions.
- Agentic AI reviews on PRs and CLI with automated one-click fix suggestions
- Multi-repo analysis, SAST/linter integration, and MCP connections
- Usage-based Slack review agent priced per agent-minute
Greptile
AI Code Review
✦ WhyA Sourcery alternative — Free Starter tier with unlimited repositories for individual developers.
- Free Starter tier with unlimited repositories for individual developers
- Credit-based review pricing (1 credit = 1 standard review)
- Deep codebase-context reviews (TREX) beyond diff-only analysis
✦ WhyA Sourcery alternative — Context-aware agentic review across IDE, PR, CLI and Git workflows in one platform.
- Context-aware agentic review across IDE, PR, CLI and Git workflows in one platform
- Credit-pooled team pricing instead of rigid per-seat licensing
- Originated as CodiumAI test-generation tool, now spans review + test generation
✦ WhyA Sourcery alternative — Free Starter tier (20 PR reviews/month) plus fully free usage for open-source projects.
- Free Starter tier (20 PR reviews/month) plus fully free usage for open-source projects
- Runs thousands of background agents nightly to scan the whole codebase, not just diffs
- Learns team standards from senior devs' past review comments
Graphite Diamond
AI Code Review
✦ WhyA Sourcery alternative — AI reviewer built into Graphite's stacked-PR workflow, not a bolt-on bot.
- AI reviewer built into Graphite's stacked-PR workflow, not a bolt-on bot
- Trained on merge-queue and review-history signal specific to fast-moving teams
- Pairs with Graphite's PR stacking/merge-queue tooling for high-velocity teams
✦ WhyA Sourcery alternative — Fully open-source VS Code fork alternative to Cursor/Windsurf.
- Fully open-source VS Code fork alternative to Cursor/Windsurf
- Bring-your-own-key to any model, no proprietary backend routing
- Agent Mode, Gather Mode and inline chat built in
✦ WhyA Sourcery alternative — Open-source, vendor-neutral IDE with AI agents built on Theia AI.
- Open-source, vendor-neutral IDE with AI agents built on Theia AI
- Bring your own API key or local model; no telemetry on code or prompts
- Customisable agents and prompts, governed by the Eclipse Foundation
Gemini CLI
Terminal & CLI Agents
✦ WhyA Sourcery alternative — Open-source terminal agent from Google.
- Open-source terminal agent from Google
- Huge free daily model quota
- Built-in tools and MCP support
- Great value for everyday coding