WOS Engine
WOS Engine is a website engine. Yes, there are already too many CMS projects, but it started as a project to learn "serious" webcoding. I still use it extensively nowadays, including on the present website, because despite my researches I haven't been able to find a framework quite as modular, straight-forward and general. Most projects are either too user-friendly to be developper-friendly, or too solution-specific to solve more varied problems.
WOS Engine is not intended to be used by end-users or even webmasters without basic programmation knowledge. It is oriented towards developpers interested in a framework providing tools for coping with the usual issues of webcoding (database handling, templates, admin interface, user sessions, caches, etc). It is still possible to quickly create a casual website (user registration and login, news, articles, etc) by using the existing modules, without having to touch any PHP code, but the setup is probably not as user-friendly as most others "ready-to-use" engines. It's simply not meant to be.
On the license side, WOS Engine is released under the GNU GPL, version 2 or later. You can download the code from the Subversion repository of the project.
A more complete description of the project will be added on this page when it's available, with links to packaged versions of the files and documentation.