Software

Enterprise Content Management software that handles any type of content, allowing users to easily share and collaborate on content. ([Source Code](https://github.com/Alfresco/alfresco-community-repo))

CMS with a focus on extensible in-context editing tools. ([Demo](https://demo.apostrophecms.com/), [Source Code](https://github.com/apostrophecms/apostrophe))

Flat-file content management system and template engine. ([Demo](https://try.automad.org/), [Source Code](https://github.com/marcantondahmen/automad))

Comprehensive CMS for small to medium sized businesses and non-profits. ([Source Code](https://github.com/backdrop/backdrop))

Straightforward, well documented, and capable CMS. ([Source Code](https://github.com/bigtreecms/BigTree-CMS))

Content Management Tool, which strives to be as simple and straightforward as possible. ([Source Code](https://github.com/bolt/core))

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 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))

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))

Modern CMS. Neos or TYPO3 Neos (for version 1). ([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))

CMS system that is used to create, edit, and manage digital content, like websites, intranets, and custom solutions. ([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/core))