Best Open Source Headless CMS in 2026
API-first CMS platforms that deliver content as data, letting developers build frontends with any technology.
2 open source headless cms — ranked by GitHub stars. Browse all
Strapi
🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.
Alternative to: 
WordPress
WordPress
Directus
The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.
Alternative to: WordPress
WordPress