Verbs extracted from Lefff.
The Lefff (Lexique des Formes Fléchies du Français) is a large-scale morphological and syntactic lexicon for French, distributed under the free LGPL-LR licence (Lesser General Public License For Linguistic Resources).
Mainly packaged for usage with french-verbs module. But it is essentially a big JSON file containing all conjugations of French verbs, and it can be used without french-verbs.
The derived resource file conjugation.json remains under LGPLLR.
Verbs database (json files) for conjugation under LGPLLR.