What is Fossa
Fossa builds open source AI Agents to help engineering teams improve code quality. Our first agent is Fossy, an AI Code Reviewer that streamlines your review process.
Fossy will be your new teammate.
Key Features
100% Open Source
All source code is available on GitHub for anyone to inspect, use, and improve.
No Inference Games
You pay providers directly at their rates. Predictable costs and full model capabilities
AI-Powered Code Analysis
Deep code understanding across multiple languages with context-aware recommendations
Future Proof by Design
New model released? Use it immediately. Works with any AI provider, any model
True Visibility
Not just “explainable AI” but complete transparency. See every file read, every decision considered, every token used
Seamless Git Integration
Works directly with GitHub, GitLab, and Bitbucket without disrupting your workflow
Customizable Rules
Define and enforce your team’s coding standards and best practices
Knowledge Retention
Preserve explicit team conventions with Memories and Fossy Rules for later reviews.
Supported Languages
Fossy works with any programming language or file type out of the box using semantic (LLM) analysis, backed by code search (grep-style) for precise, repository-wide context.Benefits for Your Team
- Faster Reviews: Automate routine checks and focus on complex aspects
- Consistent Quality: Ensure all code meets your team’s standards
- Team Conventions: Guide reviews with explicit Memories and Fossy Rules.
Our Long Term Vision
At Fossa, our mission is to empower engineering teams to achieve 10x results through AI-enhanced workflows:- 🚀 Productivity: Deliver faster without compromising quality
- 🎯 Impact: Boost business value with every recommendation
- 💜 Satisfaction: Create an environment where team members thrive
Getting Started
Quickly set up Fossy and integrate with your team’s tools and platforms.
Workspace Roles & Permissions
Learn about role-based access control and how to manage workspace members effectively.
100% Free & Self-Hosted
FOSSA is completely free and self-hosted with no paid plans, subscriptions, or hidden fees.