Good websites about Paris's metro

If some of you wants to know more about Paris's metro and RER you will maybe find theses websites quite useful they are all if french excepit if i mention the countrary.

www.navily.net/index.php
www.metro-pole.net/ (news about metro, RER, trams, buses and trains in Paris's region).
www.metro-paris.net/metro.html (in english)
www.ratp.fr/ (TfL equivalent in Paris)
www.sprague-thomson.com/ (about the trains which ran on the network prior 1983)
www.amtuir.org/dossiers/metro_paris/index_cmp/index_cmp.htm
www.cr-corporation.nl/symbioz/index.php (a sort of equivalent of this forum but for Paris)