System Software
Security
The special software within the cryptographic boundary (e.g., operating system, compilers or utility programs) designed for a specific computer system or family of computer systems to facilitate the operation and maintenance of the computer system, and associated programs, and data.
Telecommunications
1. Application-independent software that supports the running of application software. 2. Application-independent software that supports the running of application software and manages the resources of the application platform [POSIX.0].