If you checked my previous post about Airtel Free GPRS Trick and downloaded the browser then you must be seeing the Handler options while launching the browsers. In that handler menu of the browser, you can put various values to apply tricks, such as to use free GPRS.
Here I am sharing the Free Download Link for Handler UI Versions of various mobile applications which you can use in future as according to your need.
1. Opera Mini 5 Final Handler UI 150 - http://www.plunder.com/c/Opera-Mini-5-Final-Handler-150-jar-download-c67cf1e4ef.htm
2. UCWeb 7.2 Beta handler UI - http://www.plunder.com/Free-Download-UC-Web-Browser-7-2-Beta-with-Handler-ui-jar-download-d43714580e.htm
3. UCWeb 6.7 Final Handler UI - http://www.plunder.com/UC-WEB-6-7-Browser-with-Handler-menu-jar-download-e41edc8c8f.htm
4. Bolt2.02 beta handler UI143 - http://www.plunder.com/Download-latest-Bolt-2-02-beta-handlerui143-jar-for-viewing-video-in-mobile-browser-download-83fe30c247.htm
5. Nimbuzz 1.70 handler UI150.jar - http://plunder.com/c8519d6988
6. Gmail v1.50 handler.zip - http://downloads.frendz4m.com/attachments/20/3/8/1262941681-frendz4m.com-Gmailv1.50_noediting_error_in_handler_by_shankru.zip
7. Snaptu 1.26 Handler UI 121.jar - http://downloads.frendz4m.com/attachments/20/5/7/1263794408-frendz4m.com-Snaptu126HandlerUI121.jar
8. Opera mini 4.2_handler.zip - http://downloads.frendz4m.com/attachments/20/7/1/1264309244-frendz4m.com-Opmin4.2_handler.zip
9. Opera mini 5 beta2 handler.zip - http://downloads.frendz4m.com/attachments/20/7/1/1264309382-frendz4m.com-Opmin5beta2_handler.zip
10. Wattpad 04 handler.zip - http://downloads.frendz4m.com/attachments/20/7/1/1264309624-frendz4m.com-Wattpad_04_handler_by_shankru.zip