"The Software Engineering Institute (SEI) is a federally funded research and development center sponsored by the U.S. Department of Defense through the Office of the Under Secretary of Defense for Acquisition, Technology, and Logistics [OUSD (AT&L)]. The SEI contract was competitively awarded to CarnegieMellonUniversity in December 1984. The SEI staff has extensive technical and managerial experience from government, industry, and academia." -- From their about page.

Best known for introducing the CapabilityMaturityModel (CMM).

Some good SEI links:

* http://www.sei.cmu.edu
* http://www.sei.cmu.edu/ata
* http://www.sei.cmu.edu/engineering/engineering.html
* http://www.sei.cmu.edu/plp/plp_init.html
* http://www.sei.cmu.edu/psp/  (PersonalSoftwareProcess)
* http://www.sei.cmu.edu/tsp/  (TeamSoftwareProcess)
* http://www.sei.cmu.edu/cmmi/ (CapabilityMaturityModelIntegration)

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CategoryCompany, sort of