| Acronym | Meaning |
| NCSA | National Center For Supercomputing Applications |
| POSIX | Portable Operating System Interface For UNIX |
| SIG | Special Interest Group |
| AMANDA | Advanced Maryland Automatic Network Disk Archiver |
| VMS | Virtual Memory System |
| TSAPI | Telephony Service API |
| B-ISDN | Broadband-Integrated Services Digital Network |
| PURL | Persistent URL |
| SAP | Service Advertising Protocol |
| RFC | Request For Comments |