Le grand dictionnaire terminologique
An English-French/French-English dictionary (Québec).
http://www.granddictionnaire.com/_fs_global_01.htm
IATE:
A dictionary of European languages.
http://iate.europa.eu
admin:
The Swiss laws are recorded in the three main Swiss languages in the section named "Recueil systématique du droit fédéral".
http://www.admin.ch/ch/f/rs/rs.html
Many links to multilingual references compiled by the Swiss Federal Chancellery
jargon:
A site in French, specializing in Information Technology
http://jargonf.org
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Obviously, this list is far from being complete. All these sites are free of charge. I would be happy to hear from translators who can suggest other appropriate links. Please contact me.