Open source monorepo projects
Every project in the registry tagged monorepo, ranked by real GitHub adoption.
Build a custom CRM without the proprietary lock-in
Secure collaboration platform for mission-critical work
Lerna is a fast, modern build system for managing and publishing multiple JavaScript/TypeScript packages from the same repository.
Build system optimized for JavaScript and TypeScript, written in Rust
The Monorepo Platform that amplifies both developers and AI agents. Nx optimizes your builds, scales your CI, and fixes failed PRs automatically. Ship in half t
A build system and monorepo management tool for the web ecosystem, written in Rust.
The Pants Build System
High-performance extensible build system for reproducible multi-language builds.
🏃⛰ Ultra fast monorepo script runner and build tool
Related tags
Frequently asked questions
How many open source monorepo projects are there?
This registry tracks 10 projects tagged monorepo, with 214,191 GitHub stars between them. The most-adopted is Twenty at 60,319 stars.
Are these monorepo projects free to use?
Yes — 8 of the 10 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which monorepo project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these monorepo projects still maintained?
10 of the 10 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.