The best open-source Website Cms tools, curated: 12 in the registry, including Frappe Builder, Puck, Ycode. Every tool is open-source; each entry lists license, self-hostability, and links.
Frappe Builder· tool, 2026-09-15 MIT-licensed low-code visual website builder for designers and developers: craft and instantly publish sites in the Frappe ecosystem. Its AI site builder, Bob, grounds itself in your site — reading existing pages and reusing your components and theme tokens rather than guessing; frappe.io itself runs on it. An open alternative to Webflow.
Puck· tool, 2026-09-15 MIT-licensed modular visual editor for React: build custom drag-and-drop page-building experiences from your own React components. It ships as just a React component — works in any React environment including Next.js, with no vendor lock-in and your data staying yours (~13.3k stars).
Ycode· tool, 2026-09-15 MIT-licensed visual no-code website builder and CMS: create and manage sites without code, self-hosted from the open-source project or on the managed cloud. Self-hosting builds on GitHub, Supabase and Vercel. A young open alternative to Webflow.
Astro· tool, 2026-09-03 GATE PASS; modern content framework
Ghost· tool, 2026-09-03 GATE PASS (trademark limits branding not site resale)
GrapesJS· tool, 2026-09-03 GATE PASS; framework not finished product