TinkerList - A unified online collaborative platform for TV and Radio creation. Increase you margin up to 25%. Work and manage remotely. Automate and optimise your show.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Avid iNEWS - Professional media production and automation tools for news journalists and producers
Anchor CMS - Free and lightweight blogging system
Plone - Plone CMS: Open Source Content Management โ Plone.org
Textpattern - Textpattern is an elegant content management system that is free, open source software.