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1.
is the term commonly used on continental Europe, and increasingly in other non-anglophone areas for Free & Open-Source Software/Code.
Anglophones sometimes have arguments over "free" v. "open" (libre, gratis, abierto...); the continentals don't waste their time.
The Spanish sometimes say codigo abierto (open code) too when referring to this concept.
See free software and FOSS.
FOSS, FLOSS, open-source, free software are all covered by software libre.
Examples of products: Linux, the Apache web server, Firefox
by CarlosC March 10, 2006