Bilingual French-English Dictionary: Collaborative project hosted by Rennes University 1. General scope, bidirectional search capability, quiz for learners.
French Linguistics: One-way lookup (French-English) and downloadable educational games by Neil Coffey.
Semantic Atlas: Translation and synonym dictionary designed by the Lyon Institute for Cognitive Sciences (CNRS - Université Claude Bernard Lyon 1). It provides a geometric model for representing the meaning of words.