# Open system

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> Source: https://en.wikipedia.org/wiki/Open_system
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**Open system** may refer to:

## Technical term

- [Open system (computing)](/source/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)](/source/Open_system_(systems_theory)), in the natural and social sciences, a process that exchanges material, energy, people, capital or information with its environment
- [Open system (thermodynamics)](/source/Open_system_(thermodynamics)), in thermodynamics and physics, a system where matter and energy can enter or leave, in contrast to a closed system where energy can enter or leave but matter can not
- [Open system (control theory)](/source/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](/source/Management_science) a system that is capable of self-maintenance on the basis of throughput of resources from the environment
- [Open system of learning](/source/Active_learning), where information is sourced from multiple sources
- [Open government](/source/Open_government), system
- [Open-system environment reference model](/source/Open-system_environment_reference_model), one of the first reference models for enterprise architecture
- Open Distribution system (Example: [Peer-to-peer file sharing](/source/Peer-to-peer_file_sharing) system)

## Proper name

- [Open Systems Interconnection](/source/Open_Systems_Interconnection) (IT company)
- [Open Systems Accounting Software](/source/Open_Systems_Accounting_Software) (product), an accounting and business software
- [Open Systems International](/source/Open_Systems_International), supplier of open automation solutions for utilities in the electric, oil & gas, transport, and water industries
- [Open-source software](/source/Open-source_software), system (product)
- [Open publication](/source/Open_publishing), system (non-standard term)

The system in which the exchange of both mass and energy take place through surrounding[clarification needed] environment

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Adapted from the Wikipedia article [Open system](https://en.wikipedia.org/wiki/Open_system) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Open_system?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.