I’ve been working last days with my old K6-2 300 at home. I had some problems with large apps like Evolution or Firefox there, so I decided to look for another email client and another browser. Then I found two really cool ones.
Dillo is a very very light weight browser. It does not render web pages perfectly, but it’s OK if you just want to read.
On the other hand I found Sylpheed email client. It’s also light and has lots of plugins (even integration with dillo).
After three days working with them I think they’re perfect for all this kind of old machines.