Software

Faster and easier management of website contents, scalable for small businesses to large corporations. ([Source Code](http://svn.cmsmadesimple.org/svn/cmsmadesimple/trunk/))

Simple content platform to manage any structured content. ([Source Code](https://github.com/Cockpit-HQ/Cockpit))

Open source content management system. ([Source Code](https://github.com/concretecms/concretecms))

Powerful CMS that allows you to create professional websites and scalable web applications. ([Demo](https://demo.contao.org/contao), [Source Code](https://github.com/contao/contao/))

CMS for designers. ([Source Code](https://github.com/CouchCMS/CouchCMS))

Advanced open source content management platform. ([Source Code](https://git.drupalcode.org/project/drupal))

Online lab notebook for research labs. Store experiments, use a database to find reagents or protocols, use trusted timestamping to legally timestamp an experiment, export as pdf or zip archive, share with collaborators…. ([Demo](https://demo.elabftw.net), [Source Code](https://github.com/elabftw/elabftw))

Content Management System for powering database driven websites using JSON schemas. Provides permission management and automatic REST APIs

Advanced Content Management System (CMS). ([Source Code](https://github.com/joomla/joomla-cms))

CMS and web application platform. ([Source Code](https://github.com/keystonejs/keystone))

Advanced content management and publishing platform. The current version is called 'Revolution'. ([Source Code](https://github.com/modxcms/revolution))

Neos or TYPO3 Neos (for version 1) is a modern, open source CMS. ([Source Code](https://github.com/neos))

Platform for social and solidarity economy networks with blog, e-Portfolios, CMS, RSS, thematic discussion, events agenda and collective intelligence for solidarity economy in the same system

Create complex narratives and share rich collections, adhering to Dublin Core standards with Omeka on your server, designed for scholars, museums, libraries, archives, and enthusiasts. ([Demo](https://omeka.org/classic/showcase/), [Source Code](https://github.com/omeka/Omeka))

Developer-first headless CMS and application framework. ([Source Code](https://github.com/payloadcms/payload))

Multi-channel experience and engagement management platform. ([Source Code](https://github.com/pimcore/pimcore))

Powerful open-source CMS system. ([Source Code](https://github.com/plone))

Simple but full featured web publishing software. ([Source Code](https://github.com/publify/publify))

Simple, flexible and useful content management system (documentation in German). ([Source Code](https://github.com/redaxo/redaxo))

Easy to use CMS with powerful MVC framework underlying. ([Demo](https://demo.silverstripe.org/), [Source Code](https://github.com/silverstripe))

Publication system for the Internet aimed at collaborative work, multilingual environments, and simplicity of use for web authors. ([Source Code](https://git.spip.net/))

Headless CMS, based on MongoDB, CQRS and Event Sourcing. ([Demo](https://cloud.squidex.io), [Source Code](https://github.com/Squidex/squidex))

The most advanced open-source Content Management Framework (headless-CMS) to build powerful API with no effort. ([Source Code](https://github.com/strapi/strapi))

Flexible, elegant and easy-to-use CMS. ([Demo](https://textpattern.co/demo), [Source Code](https://github.com/textpattern/textpattern))