|Stable release||18.104.22.168 / 2014-09-10|
|Operating system||Linux, Solaris, Windows|
|Available in||Brazilian Portuguese, German, Spanish, French, Italian, Japanese, Korean, Simplified Chinese, Traditional Chinese, Russian, and English.|
|Website||IBM Rational DOORS|
Rational Dynamic Object Oriented Requirements System (DOORS) (formerly Telelogic DOORS) is a requirement management tool. It is a client–server application, with a Windows-only client and servers for Linux, Windows, and Solaris. There is also a web client, DOORS Web Access.
Rational DOORS has its own programming language called DOORS eXtension Language (DXL).
In order to complete its functionality, Rational DOORS has an open architecture that supports third-party plugins.
DOORS was originally published by Quality Systems and Software (QSS). Telelogic acquired QSS in mid-2000. 
- "Rational DOORS and DOORS Web Access Fix Pack 1 (22.214.171.124) for 9.6". IBM. Retrieved 3 December 2014.
- "Changing the Rational DOORS language". IBM. Retrieved 5 January 2013.
- Cleland-Huang, Jane (2012). Software and Systems Traceability. Springer. p. 48. ISBN 978-1-4471-2238-8.
- Hull, Elizabeth (2011). Requirements Engineering. Springer. ISBN 978-1-84996-405-0.
- "Using DXL (the Rational DOORS Extension Language)". IBM. Retrieved 5 January 2013.
- "Rational DOORS Next Generation (DOORS-NG on the IBM Jazz Platform)". IBM. Retrieved 7 July 2014.
- "Telelogic's QSS Acquisition Exploits Boom in Real-Time Telecommunications Applications". Gartner. Retrieved 27 Oct 2015.
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