On the Liip blog Thomas Botton points out that the French translation of the Symfony documentation is no online and available for public consumption! He was a part of the group that worked on the translation.

A year ago, I started to work with the Symfony documentation French translation team. At this time, I was actually not imagining that it would take so long to get all that work done.. In case you don't know, as of today, the Symfony documentation team already wrote more than 300 documents! Counting 1 to 4 hours to translate one doc plus the time to review it, you get an idea of the overall workload! But anyway, it's done: the Symfony documentation French translation is finally live on symfony.com!!!

He also mentions some of his reasoning for being a part of the team including it being a way to get more involved with Symfony (and open source) in general and the benefit it now provides to French-speakers wanting to get into the framework. You can find the documentation here.