heyo docs
A themeable documentation toolkit for React Router, Next.js, and Astro — with MDX, search, OpenAPI, and SEO built in.
Open-Source Software
for Developers
Explore open-source tools built to help developers write, review, and ship better software.
Built for teams,
shipped by
01 02 heyo code audit
Provider-agnostic AI code auditing for GitHub pull requests, with every finding verified in a separate Pi session.
03 heyo ui
Flat, dense React components for the interfaces developers live in — Base UI behaviour, semantic tokens, and no dark: variants.
Open source,
by default
The code is the product
Every line of code is public on GitHub. Read it, run it, and change it.
MIT licensed
Use Heyo at work, in production, or as a starting point for your own tool.
Your repo, your rules
Keep configuration next to code, versioned and reviewable.
Deploy anywhere
Use the infrastructure and workflow your team already has.
Built to be extended
Fork it. Add what you need. Remove what you don't.
Built in the open
Issues and pull requests are part of how Heyo improves.