I created StartupOnTop to address this very issue and offer a directory that presents startups in a clean, clutter-free manner. It offers a top-down view (startups first, categories later) and also shows a "quick - view" for users to quickly learn about a startup.
Most importantly, I intend to vigorously maintain it - I would like to keep it ad-free and spam-free. That means, the site is not meant for ‘every’ startup and will try to prevent the site from generic dilution. After a free first month, charging a basic maintainance fee.
Here is the submission link: http://startupontop.com/submit-startup/
-Paul
