This is a listing of all multi-platform and server-based HTML editing tools known to me (except for the ones you've emailed me about, that I haven't gotten around to including in the list yet). This list includes editors that are supported on multiple platforms (such as SoftQuad's HoTMetaL, which is available for Windows, Mac, and Unix platforms), and server-based HTML editors that typically offer a web-based (forms/CGI) interface accessible through any web browser.
I have similar lists for the following platforms: Macintosh, NeXTstep, OS/2, Unix, and Windows.
Would you like to make a contribution?
I'm sorry, but I am unable to give advice on what editor is most suitable for your specific needs. (For whatever it's worth, I use vi.) I do the best I can to keep up with what editors exist, but I don't have nearly enough time to try them out, or do detailed feature comparisons. If anyone knows of sites giving editor reviews, feature comparisons, or similar information, please let me know and I'll list it here.