Franklin: eBooks: http://www.franklin.com/estore/ebooks/
Frantext (ATILF): http://www.frantext.fr/
FreeBSD Project (BSD: Berkeley system distribution): http://www.freebsd.org/
Freedom Scientific: http://www.freedomscientific.com/
French Publishers’ Agency (The): http://www.frenchpubagency.com/
FSF (Free Software Foundation): http://www.fsf.org/
FSFE (Free Software Foundation Europe): http://www.fsfeurope.org/
FTPress (French Touch Press) Groupe: http://www.ftpress-groupe.com/
Furet du Nord (Le): http://www.furet.com/
Gallica: http://gallica.bnf.fr/