Ethereal currently runs on most UNIX platforms and various Windows platforms. It requires GTK+, GLib, libpcap and some other libraries in order to run.
If a binary package is not available for your platform, you should download the source and try to build it. Please report your experiences to ethereal-dev[AT]ethereal.com.
Binary packages are available for at least the following platforms:
Apple Mac OS X
BeOS
FreeBSD
HP-UX
IBM AIX
NetBSD
OpenBSD
SCO UnixWare/OpenUnix
SGI Irix
Sun Solaris/Intel
Sun Solaris/Sparc
Tru64 UNIX (formerly Digital UNIX)
Debian GNU/Linux
Gentoo Linux
IBM S/390 Linux (Red Hat)
Mandrake Linux
PLD Linux
Red Hat Linux
Rock Linux
Slackware Linux
Suse Linux