If you need to  mind map information sources in English, French, German and Spanish then you can use Comapping with Context Organizer which offer support for multilingual mind mapping.

If your documents are bilingual or multilingual in case that you work with international companies, government agencies, and NGOs, then Comapping offers a pragmatic option to summarize and mind map information in those four languages. 

Here is an example of mind mapping Wikipedia’s pages describing "mind mapping" in  English, French, German and Spanish.

* This mind map was produced using Comapping online collaborative mapping software with Context Organizer Analyze auto-mapping add-on.

Download and try out Context Organizer for free today