Open source declarative projects
Every project in the registry tagged declarative, ranked by real GitHub adoption.
Write components once, run everywhere. Compiles to React, Vue, Qwik, Solid, Angular, Svelte, and more.
Open Policy Agent (OPA) is an open source, general-purpose policy engine.
Generic templated configuration management for Kubernetes, Terraform and other things
Frequently asked questions
How many open source declarative projects are there?
This registry tracks 3 projects tagged declarative, with 28,560 GitHub stars between them. The most-adopted is mitosis at 14,391 stars.
Are these declarative projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 2 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 declarative 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 declarative projects still maintained?
3 of the 3 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.