The L'Oréal and Ipsos Foundation are running a survey on gender equality in research, available in 6 different languages (German is not among them, but English is). It is asking scientists for their experiences in their careers and work, and according to the survey intro, it takes about 10 minutes to complete. (It took me a bit longer.)
It is especially interesting if you are working in an academic environment or a company also doing research - it's definitely not tailored towards special cases like me, who are working as self-employed people with a research part to their job. But even if I could not contribute to quite a few of the questions, I can at least spread the word further!
The survey is online until September 9, so if you plan to do it, or plan to pass the info on to someone else, you should do it before then.