OS/2
= O =
OSU
OSS
Written-only acronym for "Open Source Software" (see
open source). This is a rather ugly TLA, and the
principals in the open-source movement don't use it, but it has
(perhaps inevitably) spread through the trade press like kudzu.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.