Halo is an open-source CMS and site builder with themes, plugins, an editor, backups, REST APIs, and optional AI extensions for content and knowledge sites.

39.4k stars10.3k forksGPL-3.0last commit Actively maintained
Enterprise content management and digital experience platform providing headless and traditional CMS capabilities. Includes editorial workflows, omnichannel publishing, AI-assisted authoring, integrations, and developer APIs for websites and apps.
Halo is an open-source CMS and site builder with themes, plugins, an editor, backups, REST APIs, and optional AI extensions for content and knowledge sites.

39.4k stars10.3k forksGPL-3.0last commit Actively maintained
Wagtail is an open-source CMS built on Django and Python, offering an editor-friendly admin UI, flexible content modeling with StreamField, and optional headless APIs.

20.4k stars4.6k forksBSD-3-Clauselast commit Actively maintained
Open-source flat-file CMS for PHP that uses Markdown, Twig templates and YAML configs with a package manager for fast, flexible sites.

15.6k stars1.4k forksMITlast commit Actively maintained
Umbraco CMS is an open-source ASP.NET Core content management system with an editor-friendly backoffice, extensible architecture, and scalable deployment options.

5.2k stars2.9k forksMITlast commit Actively maintained
Joomla! is an open-source PHP CMS for building and managing websites with templates, extensions, multilingual support, and granular user permissions.

5.1k stars3.9k forksGPL-2.0last commit Actively maintained
Open-source full-stack CMS built with Node.js and MongoDB, featuring in-context visual editing and headless APIs for building modern websites and content apps.

4.6k stars643 forkslast commit Actively maintained
Winter CMS is a Laravel-based, self-hosted open-source CMS with a user-friendly backend and extensible plugin/theme architecture for websites and web apps.

1.5k stars244 forksMITlast commit Actively maintained
MODX Revolution is an open source PHP CMS and content management framework for building highly customized websites and digital experiences with full control over markup and templates.

1.4k stars523 forksGPL-2.0last commit Actively maintained
Enterprise-grade PHP CMS with multisite, multilingual and headless capabilities, extensible via Composer and an extensive extension ecosystem.

1.2k stars706 forksGPL-2.0last commit Actively maintained
Backdrop CMS is a lightweight, easy-to-use PHP content management system for building and managing professional websites with extensible add-ons and a Drupal 7 upgrade path.

1k stars401 forksGPL-2.0last commit Actively maintained
Textpattern CMS is a lightweight, extensible PHP CMS for building blogs and websites with a tag-based templating system, plugins, and a streamlined admin interface.

878 stars110 forksGPL-2.0last commit Actively maintained
Open-source CMS for teams with in-context editing, granular permissions, and built-in collaboration.

849 stars480 forksMITlast commit Actively maintained
Open-source digital newsroom platform for news creation, curation, workflow, and multi-channel distribution, built around an API-centric headless CMS.

745 stars237 forksAGPL-3.0last commit Actively maintained
Contao is an open-source PHP CMS for building professional, accessible, SEO-friendly and performant websites and web applications; extensible via Symfony bundles and Composer.

432 stars171 forksLGPL-3.0last commit Actively maintained
CouchCMS is a PHP-based lightweight CMS that converts static HTML/CSS templates into editable sites with cloned pages, forms, comments and RSS.

375 stars86 forkslast commit Actively maintained
REDAXO is a lightweight, modular PHP CMS offering block/module-based content editing, a media pool, multilingual support, and an extensible AddOn system.

350 stars118 forkslast commit Actively maintained
Open-source PHP and MySQL CMS focused on developer control, template-driven sites, modular content types, and an intuitive admin/editor experience.

222 stars56 forkslast commit Actively maintained
SPIP is a free, multilingual CMS focused on collaborative publishing, editorial workflows, and flexible templating for websites, magazines, and organizational portals.

Activity unknown
Neos is a PHP-based content application platform (CMS) focused on structured content, inline editing, and a powerful content repository for building websites and content-driven apps.
Activity unknown
CMS Made Simple is an open source CMS focused on easy website management, flexible design with Smarty templates, extensibility via modules, and a developer-friendly API.

Activity unknown
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 17 of 20 shipped a commit in the last six months. Licences in this list: GPL-3.0, BSD-3-Clause, MIT, GPL-2.0, AGPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Traditional CMS.