You can download Mozilla v1.1 here.

Mozilla is currently my favorite browser. Once it gained the tabbed browsing feature its greater standards compliance as compared to Opera caused me to switch to Moz for most of my browsing. If you haven't tried Mozilla at all or haven't tried it recently I would suggest taking it out for a spin. Its only a 10 meg download for Windows. Builds are available for most other operating systems as well.

Opera v7's release is getting close and it will usher in full DOM support and other improvements in standards support. I believe its a major rewrite of their rendering engine. So if Opera v7 maintains Opera's its advantage in lower memory usage it will be worth a try.

While I haven't tried it BroadPage looks interesting. Its a free browser built on top of IE that supports tabbed browsing. You will find a link to download BroadPage here too.

Also, for tabbed browsing you can check out (and I have not tried) IE plugins that give IE that capability. Surftabs is free and its even open source. Netcaptor costs $29.95 and works only with IE 4 and 5. Surftabs is worth a try IMO.