The Open Learning Initiative has open learning courses mainly of a scientific or mathematical nature but it does off two levels of French. The approach is for mature students who want to learn on their own but he French videos and exercises you could use in class under supervision or allow older students to use them as a help and extra practice. The conversations are quite natural and the treatment of the material is thorough. Hopefully , other levels will be added as time permits. Putting together online materials is very painstaking and time consuming and since this site does not charge it would be at their convenience and within their study and research parameters for delivering online content.