Of course I found the link to Alan Wood first. That´s where I got the hint to SUA from. It seems that Pepper would be the tool of choice, but it is nowhere to find at the whole net.

The 2nd link looks good, thanks. And about iText, I am a little bit confused what is the difference to LightWayText, as the 2nd seems to support UTF-8. I´ll give it a try. But anyway I am wondering if there is no other freeware for UTF-8 at MacOS 9?