🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.

Payload is the open-source, fullstack Next.js framework, giving you instant backend superpowers. Get a full TypeScript backend and admin panel instantly. Use Payload as a headless CMS or for building powerful applications.

WordPress, Git-ified. This repository is just a mirror of the WordPress subversion repository. Please do not send pull requests. Submit pull requests to https://github.com/WordPress/wordpress-develop and patches to https://core.trac.wordpress.org/ instead.

A Django content management system focused on flexibility and user experience

The superpowered headless CMS for Node.js — built with GraphQL and React

Home of the Joomla! Content Management System

Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.

A full-featured, open-source content management framework built with Node.js that empowers organizations by combining in-context editing and headless architecture in a full-stack JS environment.

Core Framework for the Open Source Data & Experience Management Platform (PIM, MDM, CDP, DAM, DXP/CMS & Digital Commerce)

Headless CMS and Content Managment Hub

A self hosted Web publishing platform on Rails.

Free, open-source, self-hosted CMS platform based on the Laravel PHP Framework.

MODX Revolution - Content Management Framework

Simple, Fast, Secure, Flat-File CMS

The TYPO3 Core - Enterprise Content Management System. Synchronized mirror of https://review.typo3.org/q/project:Packages/TYPO3.CMS

📓 eLabFTW is the most popular open source electronic lab notebook for research labs.

Backdrop core code repository.

A flexible, elegant, fast and easy-to-use content management system written in PHP.

Official repository for Concrete CMS development

Fast and small flat file CMS (5 files). Built with PHP, JSON database.