GNU = GNU's Not Unix. A RecursiveAcronym. The GNU project seeks to create a FreeSoftware replacement for the standard commercial unix environments. It is doing very well, having built free versions of many of the important bits of software (kernel, shell, compiler, editors, all sorts of system software). - http://www.gnu.org/ GNU is the coding arm of the FSF; they are the core institutions of the FreeSoftware movement. CategoryGeekery