Feature | IE6 | Firefox 1.5 | Opera 9 |
Tabbed Browsing | Addon | Yes | Yes |
Resize tabs | No | No | Yes |
Reorder tabs | No | Yes | Yes |
Move pages within the browser | No | No | Yes |
Built in Email | Outlook Express | No | Yes |
Feed Reader | No | Yes | Yes |
Extension Support | Yes* | Yes | Yes* |
Popup Blocking | Yes | Yes | Yes |
Fast back and forward | No | Yes** | Yes |
Fastforward and Rewind | No | No | Yes |
Mouse Gestures | No | Extension | Yes |
Skins | No | Yes | Yes |
Custom Menus | Addons | Extensions | Yes |
Custom Buttons | Addons | Extensions | Yes |
Alpha Transparent PNGs | No | Yes | Yes |
Native SVG | No | Incomplete | Yes |
Voice support | No | No | Yes |
Spellcheck | No | Extension | Yes |
IRC Client | No | Extension | Yes |
True XHTML Support | No | Yes | Yes |
Notes Support | No | Extension | Yes |
Remember Passwords | Yes | Yes | Yes |
Form Fill | No | Yes | Yes |
User Style Sheets | No | Yes | Yes |
UserJS | No | Extension | Yes |
Fullscreen Mode | Yes | Yes | Yes |
Acid2 Complient | No | No | Yes |
Content/Ad Blocker | No | Yes*** | Yes |
No Spyware (on default) | Yes | Yes | Yes |
*Opera supports Widgets and you can add menus, buttons, as well as modify pages via userjs. IE6 supports addons such extra toolbars, menus, and buttons
**Firefox has cached Back and Forward, but it eats up memory, making your computer slower.
***Firefox's built in blocker only blocks images from specific domains. You need to install an extension to get full functionality.