I started this project after noticing how little usage most Chrome extensions get, even though many of them are quite useful. Most decent Chrome extensions have just some thousands of users, even though there are around 100 million Chrome users.
The idea is to have a directory of apps that go well with certain websites, exposed through a Chrome extension that then informs users if any apps are available for the website they are currently visiting.
It seems this would benefit both users and the app developers.