Awesome fund. Sad that it is limited to German residents and not to all Europeans!
There is the EIF, of which many of these local funds are recipients. Which country are you in?
The point is that there are plenty 'national subventions' one can apply in local European countries. But I have never seen one with rules so 'down to Earth'/'realistic'. Like the range of subject is large. They don't care if you are an individual or a registered entity. They don't require to have some credentials like being a student or an academic. They work on the idea of giving multiple small sums instead of few big ones. Totally oriented on the dev open source software.