Store Commander allows you to export your entire catalog in all languages in just a few steps.
The mapping panel also includes filtering options, allowing to exclude specific fields. With these filters, you will be able to export your catalog but this time in different languages.
For instance, to export your catalog in French, load all fields with the corresponding icon, and then add 'EN' in the filter box of the 'Language' column. Only data in English is displayed.
Then, select them all using the mass selection icon:
Now you can choose to delete them using the 'delete' icon:
or exclude them with a right-click > uncheck:
Repeat the same steps for all other languages except French.
Once you have saved this mapping and categories configuration and selected the additional options, you can start the export.
The generated CSV file will include your catalog in French only.