| ANSI | American National Standard for Information Systems |
| API | Application Programming Interface |
| ASCII | American Standard Code for Information Interchange |
| AT 386 | Advanced Technology Intel 80386 based PC |
| FIPS | Federal Information Processing Standard |
| FSF | Free Software Foundation |
| IEEE | Institute of Electrical and Electronics Engineers, Inc. |
| IPC | Inter Process Communication |
| ISO | International Organization for Standards |
| POSIX | Portable Operating System Interface for uniX |
| POSIX.1 IEEE Std. 1003.1-1990 Standard for Information Technology | Portable Operating System Interface (POSIX) - Part 1: System Application Programming Interface (API) |