Adobe Creative Suite
ArsDigita Community System. Originally built by Philip Greenspun, became shepherded by ArsDigita.
For building SQL-backed dynamic community websites. See Philip Greenspun writings page for more information.
Originally built around A O L Server, Oracle, and TCL. Later rebuilt over Java, though I'm not clear on how the Java toolkit related to the Tcl (whether they were kept as complete functional clones, or what).
also AffiliatedComputerServices - IT OutSourcing company http://www.acs-inc.com/