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 (control theory), a feedforward system that does not have any feedback loop to control its output in a control system
Open system, in management science a system that is capable of self-maintenance on the basis of throughput of resources from the environment
Open Systems Interconnection, an effort to standardize computer networking
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-system environment reference model, one of the first reference models for enterprise architecture
Open Systems Accounting Software, accounting and business software
Open Systems International, supplier of open automation solutions for utilities in the electric, oil & gas, transport, and water industries
Open Systems AG, a company headquartered in Zurich, Switzerland
Open Source Software system
Open Government system
Open publication system
Open Distribution system (Example: Peer-to-peer file sharing system)

See also