I'd like t promote Netsurf, it semi modern browser with css support etc.
There is already SDL frontend of it to 68k amiga, but is slow as hell and requires lot's of memory and AFAOS etc to work.
As I said OS4 version has a reaction gui and Chris who has made it, has keeped his mind that some day somebody might want to make 68k/OS3.X version of it.
He has also promised to help if somebody is willing to take a task.
Chirs has said that 68k version is "relatively easy" task. I ques that reletively means that how skilled/experienced coder you are.
I'm not a coder so I can't say