Mobileleap’s Mobile Virtual Browser is a unique type for web browser service for any type of mobile device like Nokia, Sony Ericsson or Windows Mobile device. It is similiar to Opera Mini which compresses data on the server and then sends the content to the mobile device, the difference being you don’t need to download and install any software on to your mobile device. This online service mobilizes content on the fly as you browse through the Virtual Mobile Browser.
Demo here
You just need to goto http://mobileleap.net/v2 from your existing web browser. MobileLeap Virtual Browser will detect your device type, and instantly reformat websites by compressing data, filtering out unsupported content and fitting the pages to your mobile device screen (sort of remote display).
It compresses both content and images thus saving upto 80% of bandwidth costs and making browsing/surfing quicker and faster.

Other features include:

-GZip Content compression
-Select image resize/recompression size
-Built-in RSS/RDF viewer
-Detects JavaScript content popups and other active content
-Detailed Data Transfer Reports
-Inter-Session Cookie Support

This online mobile service can be a good alternative to Opera Mini and is free for personal use.