The translation of many technical words can be found on Wikipedia that going to the English articles then switching to French, e.g.:

• http://en.wikipedia.org/wiki/Quicksort -> http://fr.wikipedia.org/wiki/Tri_rapide
• http://en.wikipedia.org/wiki/Backhaul_(telecommunications) -> http://fr.wikipedia.org/wiki/R%C3%A9seau_d%27acc%C3%A8s

Then http://www.linguee.fr/ if another great resource, e.g.:

• http://www.linguee.fr/francais-anglais/search?source=auto&query=plug-and-play -> prêt-à-l’emploi (this translation depends on the context).