O
pera Mini is one of the most famous mobile browsers available. It helps you to save mobile data and thus your mobile bill. Opera released a beta version of Opera Mini for the Windows Phones.

Features
This browser supports Tabs and speed dial. Speed Dial allows you to set your favorite and most frequent visited websites for easy access.
It can reduce page size up to 10% and save data
Allows to save pages for offline access.
Easy to use interface with big buttons
You can get the application from the Windows Phone store. (Please note that it is in Beta stage and may have some bugs).

Microsoft have removed so many applications from the windows store based on some criteria related to logo, name etc. If you search Opera on the Windows phone store you can still find applications using opera logo and name. So when you are installing, make sure that the application publisher is Opera Software.