Ever since the Hachette dictionnaire francais disappeared I've been hoping to find a replacement. There are plenty of good translation dictionaries available. For example there's the incomparable Grand dictionnaire terminologique where you can find technical words translated and categorized by field of endeavour. Fantastique. But now I found another source for a straight french dictionary, with definitions in french: Tresor de la langue francaise informatise . Surprisingly it's not in DMOZ yet.