Open system

Open system may refer to:

Open system (computing), one of a class of computers and associated software that provides some combination of interoperability, portability and open software standards, particularly Unix and Unix-like systems
Open system (systems theory), a system where matter or energy can flow into and/or out of the system, in contrast to a closed system, where energy can enter or leave but matter may not
Open system, in management science a system that is capable of self-maintenance on the basis of throughput of resources from the environment
open and closed system in social science
Open system in thermodynamics (or in physics)
Open system of learning, where information is sourced from multiple sources
Open Systems Accounting Software, accounting and business software

See also