Operating systems supported
| System | Version |
| Digital UNIX | 3.2 or above |
| HP-UX | 10.20 or above |
| IBM AIX | 4.1.4 or above |
| Linux | RedHat 5.0 or above, Caldera 1.3 or above, SuSE 5.3 or above, and Slackware 3.5 or above |
| SCO | UnixWare 2.1, UnixWare 7 and OpenServer 5 |
| SGI IRIX | 6.3 or above |
| Sun Solaris | 1.0* SunOS 4.1.4 |
| Sun Solaris | 2.5.1 (SunOS 5.5.1) or above |
| Sun Solaris | Intel Platform Edition 2.6 (SunOS 5.6) or above |