Links

Interactive French Grammar
Reverso

Google Translate is a free automatic translator for more than 50 languages
Google Translate

Le-dictionnaire.com, conjugation, synonyms:
Le-dictionnaire.com

Office Québécois de la langue française (Quebec Agency for the French language) :
O.Q.L.F.

Le grand dictionnaire terminologique de la langue française (terminological dictionary of the French language) :
G.D.T.

English-French dictionary
Word Reference

You learn French? Here are some useful links