For mobile testers we have these

10-excellent-tools-for-testing-your-site-on-mobile-devices

1. iPhoney
2. W3C mobileOK Checker
3. iPad Peek
4. Modify Headers
5. Adobe Device Central CS5
6. Google Mobilizer
7. Gomez
8. MobiReady
9. DotMobi Emulator
10. Opera Mini Simulator