TagSpaces - TagSpaces is an open source platform for personal data management. With TagSpaces you can manage and organize the files on your laptop, tablet or smart phone.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Tabbles - Tabbles use tags to organize and find files along with your colleagues.
Anchor CMS - Free and lightweight blogging system
allTags - allTags is a free, tag based file management application.
Textpattern - Textpattern is an elegant content management system that is free, open source software.