"For now, Unite, which is available for Linux, Mac OS X
and Windows, is alpha software. That means it breaks. A lot. (I
experienced a number of disconnects and freezes.) Still, I was able
to get it to work on systems running Windows XP and SimplyMepis
8.0, a Debian Linux distribution.
"What is it? With Opera Unite, you can, in theory, share files
on your computer -- photos, MP3 audio files, etc. -- with your
friends or the entire world. You can also use applets that let you,
for example, host real-time chats or discussion forums. Any user,
no matter what browser they use, can access whatever you decide to
share."