We've held off on inserting multi-lingual access to this web site, still under development, but since it and other sites can be easily translated using Google Translate among others, that has not been a priority.
This recommended website is mostly in French, and comes recommended by a past director of the French national policy planning staff, the youngest person to ever hold the position and one of the most brilliant scholar-practitioners of knowledge as an economic good (or bad) we've ever met.