There are a lot of browsers for Tiger, but some of them I wouldn’t put in the lightweight category and therefore didn’t include in my testing. It is a 400 MHz with 1 GB of RAM, a new 5400 rpm 40 GB hard drive with AirPort Card and running Mac OS X 10.4.11 Tiger with all the latest updates installed. After looking carefully at my results and some of the comments I received, I have retested some of the more lightweight browsers on my Pismo PowerBook G3. I recently tested as many browsers as I could find, but the test machine was my iMac Core Duo running Mac OS X 10.5 Leopard.
As a user of older Macs, especially G3s, lightweight apps make your day-to-day usage a lot easier, and this extends to web browsers.