Usually all my projects are based on this framework. Few examples
- http://livehelperchat.com/
- http://artmight.com/
- http://every-word.com/
- http://test-pay.com/
- ... and many other custom projects
- MySQL
- MongoDB
- Cache engines
- Memcached
- APC
- Redis
- Template compile
- Modules file compilation
- Framework is orientated to speed.
- I do not expect that a lot of people find it usefull, but some may find :)