It creates and publishes foreign language courses, which began with their first book Anglais sans peine (English Without Toil).

Since then, the company has expanded into numerous other languages and continues to publish today.

Their method for teaching foreign languages is through listening to recordings, and the reading of a book with the text that you are listening to: one side native language, one side foreign language.

It begins with a long passive phase of only reading and listening, and eventually adds active exercises.

The company publishes several different series: For the English reader, the following languages are available (as of October 2022[update]):