Tiki Groupware/CMS : Tiki Wiki CMS Groupware is a free and open source Wiki-based content management system and online office suite written primarily in PHP and distribute...
Plone : Plone is a free and open source content management system built on top of the Zope application server.
PhpWiki : PhpWiki is a clone of the original WikiWikiWeb
Strapi : Open source Node.js Headless CMS to easily build customisable APIs
Alembic : Alembic is a new database migrations tool, written by the author of SQLAlchemy.
