It's free (as in free speech and free beer). Arora runs on Linux, embedded Linux, FreeBSD, Mac OS X, Windows, Haiku, and any other platforms supported by the Qt toolkit.

Arora uses the QtWebKit port of the fully standards-compliant WebKit layout engine. It features fast rendering, powerful JavaScript engine and supports Netscape plugins.

Apart from the must-have features such as bookmarks, history and tabbed browsing Arora boasts: Learn more.