Open source builder projects
Every project in the registry tagged builder, ranked by real GitHub adoption.
A powerful open-source UI framework for Laravel • Build and ship apps & admin panels fast with Livewire
Write components once, run everywhere. Compiles to React, Vue, Qwik, Solid, Angular, Svelte, and more.
The visual editor for React.
Visual development platform for modern web experiences
Drag and drop page builder library written in vanilla javascript without dependencies or build tools.
Visual app builder that integrates with your existing codebase
A visual playground for agentic workflows: Iterate over your agents 10x faster
Drag-n-Drop Email Editor Component for React.js
CrossUI is a free Cross-Browser Javascript framework with cutting-edge functionality for rich web application. NEW: studio.crossui.com
Laravel Admin panel and more. Simple for beginners and powerful for experts. Using Blade, Alpine.js and Tailwind CSS.
A cross platform build and deployment automation system for building projects and executing deployment scripts using C# code.
Newsletter Builder with MJML components in GrapesJS
😊📊 Form builder for anonymous surveys, polls, and collecting feedback. Experience management solution.
Related tags
Frequently asked questions
How many open source builder projects are there?
This registry tracks 13 projects tagged builder, with 101,779 GitHub stars between them. The most-adopted is filament at 32,397 stars.
Are these builder projects free to use?
Yes — 13 of the 13 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 builder 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 builder projects still maintained?
8 of the 13 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.