It is confirmed to work on the following environments:
+Linux
+
o Debian GNU/Linux unstable (sid) (glibc 2.2.x)
o Debian GNU/Linux testing (woody) (glibc 2.2.x)
o Debian GNU/Linux 2.2 (potato) (glibc 2.1.3)
o Kondara MNU/Linux (glibc 2.1.x)
+o Kondara MNU/Linux 1.2
+o Kondara MNU/Linux 2.0
o Vine Linux 1.1 (glibc 2.0.x + libwcsmbs)
o Vine Linux 2.0 (glibc 2.1.x) (Intel, PPC)
o Vine Linux 2.1
+o Vine Linux 2.1.5
o Laser5 Linux 6.0 (glibc 2.1.x)
o Laser5 Linux 6.2 (glibc 2.1.x)
o Laser5 Linux 6.4 (glibc 2.1.x)
o TurboLinux 4.0 (glibc 2.0.7 + libwcsmbs)
o TurboLinux 6.0 (glibc 2.1.2)
+o TurboLinux 7.0 (glibc 2.2.x)
o Miracle Linux Standard Edition Version1.0
o Miracle Linux for PostgreSQL Version1.0
o Miracle Linux for Samba Version1.0
o RedHat Linux 6.2 / 6.2J (glibc 2.1.x)
o RedHat Linux 7.0 / 7.0J
o RedHat Linux 7.1
+o RedHat Linux 7.2
o LinuxPPC2000 + Yukikaze(Japanization kit)
o Linux2000G (Intel / PPC)
o HOLON Linux 2.0 (Intel / PPC)
o Linux MLD4
o Linux MLD5
o Plamo Linux 2.0
+o Plamo Linux 2.1
+o Slackware 7.0
o Slackware 7.1
o Slackware 8.0
o Linux Mandrake 7.0
o SuSE Linux 7.0
o SuSE Linux 7.1
o SuSE Linux 7.2
+o SuSE Linux 7.3
o OpenLinux 2.3 (glibc 2.1.1 -> 2.1.3)
o Caldera OpenDesktop 2.4
o Caldera Workstation 3.1
o Conectiva Linux 5.0
o Vector Linux 1.5
o Yellow Dog Linux 2.0 (glibc 2.2.1)
+o Yellow Dog Linux 2.1 (PowerPC)
+
+BSD
+
o FreeBSD 3.2-RELEASE
o FreeBSD 3.4-RELEASE
o FreeBSD 4.0-RELEASE
o FreeBSD 4.1-RELEASE
o FreeBSD 4.2-RELEASE
o FreeBSD 4.3-RELEASE
+o FreeBSD 4.4-RELEASE
o FreeBSD 5.0-CURRENT
o NetBSD 1.4.2
o NetBSD 1.5 + XPG4DL
o NetBSD 1.5.1
+o NetBSD 1.5.2
o OpenBSD 2.7
o OpenBSD 2.8 (i386)
o OpenBSD 2.9
+o OpenBSD 3.0
o BSD/OS 4.0.1
+
+Other commercial Unix
+
o Solaris 2.5
o Solaris 2.5.1
o Solaris 2.6
o IRIX 6.3
o IRIX 6.5 6.5.8m
o HP-UX 10.20
+o HP-UX 11.0
+o HP-UX 11i
o Tru64 Unix 5.0 (OSF1 V5.0)
o SCO UnixWare 7
o Mac OS X (Darwin 1.3) + Xtools (has locale problem)
+
+Others
+
o Windows (cygwin + GTK+ for win32) (unstable)