If you use Avant Browser, or you don't like the current web browser that you use now, you might want to try Orca Browser. Orca Browser is developed by the developer of Avant Browser. Orca Browser is developed to be fast, user friendly and designed to add more functionality on Mozilla Firefox. Orca Browser uses the same web rendering engine as Firefox, Gecko.

Features of Orca Browser according to the developer:

1. Online Profile Storage - users of Orca Browser can store their bookmarks, RSS feeds, browser configurations, web passwords, etc on Avant Online Storage so the users can access and synchronize their data anywhere or just simply as an online backup for Orca Browser's settings.
2. AutoFills
3. You can use Firefox Extensions on Orca Browser too! (some, not all)
4. Popup and ad blocker
5. Mouse Gestures - Navigation for the lazy. Mouse gestures will let you to perform some browser commands with mouse movements.
6. Session saving and recovery
7. RSS Reader
8. Clearing browsing traces with one click.

In my quick test, the memory usage of Orca Browser is lower (around 40MB) than Firefox 3 when opening same 7 websites. Compared with Orca Browser's sister, Avant Browser, the memory usage of Orca Browser is lower.

Like Avant Browser, Orca Browser will popup a small menu when you hover your cursor on images which allows you to save the image, zoom in or out, copy the URL of the image, open the image in new tab or e-mail the image which might be handy for some user. There is also a menu that allows you to translate a webpage to a few other language using Google Translate service.