# Sintran

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**Sintran** (a [portmanteau](/source/Portmanteau) of **SIN**TEF and For**tran**; stylized as **SINTRAN**)[1] is a range of [operating systems](/source/Operating_system) (OS) for [Norsk Data](/source/Norsk_Data)'s line of [minicomputers](/source/Minicomputer). The original version of Sintran, was written in the programming language [Fortran](/source/Fortran), released in 1968, and developed by the Department of Engineering Cybernetics at the [Norwegian Institute of Technology](/source/Norwegian_Institute_of_Technology) together with the affiliated research institute, [SINTEF](/source/SINTEF). The different incarnations of the OS shared only a name, and to a degree, purpose.

Norsk Data took part in developing *Sintran II*, a [multi-user software](/source/Multi-user_software) system that constituted the software platform for the [Nord-1](/source/Nord-1) range of [terminal servers](/source/Terminal_server). By far the most common version of the OS was [Sintran III](/source/Sintran_III), developed solely by Norsk Data and launched in 1974. This [real-time](/source/Real-time_operating_system) [multitasking](/source/Computer_multitasking) system was used for Norsk Data's server machines (such as the [Nord-10](/source/Nord-10), [-100](/source/Nord-100)) for the remainder of the company's lifetime, i.e. until 1992.

## See also

- [Sintran III](/source/Sintran_III)

## References

1. Steine, Tor Olav (2020). [*Norsk Data - hva gikk galt?*](https://www.google.com/books/edition/Norsk_Data_hva_gikk_galt/L0bnDwAAQBAJ) (in Norwegian). Alfatroll Forlag. ISBN 9788230345740. Retrieved November 6, 2025.

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