I started creating modules for my application using the CamelCase module names, as I interpreted the standard ZF syntax (ex. /path/to/app/root/application/modules/User/controllers/). Then I realised this made my urls case-sensitive as well (ex., http://www.example.com/User/).
Uppercase/CamelCase module names still make more sense to me, since the class names inherit the case. If I used lowercase module names (ex., modules/user/) then my classnames would also be lowercase (ex., user_Model_Name) which really seems funny to me.
So I opted to make a front controller plugin to handle the conversion for me, thus making module names in the URL inherently case-insensitive. Continue reading Case-insensitive module URLs in Zend Framework routes