Open source component-library projects
Every project in the registry tagged component-library, ranked by real GitHub adoption.
Radzen Blazor is the most sophisticated free UI component library for Blazor, featuring 145+ native components including DataGrid, Scheduler, Charts, and advanc
Agent-native visual CMS. Build sites with Claude/Codex/whatever, manage them visually.
A React library for building forms from any schema.
Frequently asked questions
How many open source component-library projects are there?
This registry tracks 3 projects tagged component-library, with 8,821 GitHub stars between them. The most-adopted is radzen-blazor at 4,348 stars.
Are these component-library projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 1 distinct licence, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which component-library 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 component-library projects still maintained?
2 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.