Well for both of your questions ans is there are plenty of them..
1. Some of the sites are .. mobango.com
mobile9.com
best ways is to google it.
2. And for mobile apps. it depends on choice... as for me my fav list is
Dictionary, Maps, Google Search, Opera Mini Browser, Facebook, Socially, Skype, Nimbuzz. List is so long. Create your own :-D
All the best
