LanguageGuide.org
A well-structured repository of grammar guides that includes interactive exercises.
http://www.languageguide.org/french/grammar/
Verb Conjugator
Type in the French infinitive, and this utility will generate conjugations for present, simple past, future, conditional, imperfect, subjunctive tenses. Very handy.
French Grammar Central
GlobeGate Project, University of Tennessee at martin
Collection of external links. Good source for complex constructions such as pluperfect, future perfect, etc.
http://globegate.utm.edu/french/globegate_mirror/gramm.html
