Firefox has released an alpha concept(Fennec) for mobile devices. It looks like it has a lot of potential, however it does look a little slow/buggy from the window in some instances. I do like the features it offers for a mobile browser:
- Full screen rendering
- Awesome bar type suggest(not sure on the exact name..)
- Bookmarks and easy navigational buttons
- Desktop emulators for Windows, OSX, and Linux!