iirc it's flowstone DSP, last time I looked there was still a free version though it's not an open source project. Would recommend to anyone as an example of good UI in this area
@anigbrowl I do not know flowstone DSP, but I see you were thinking much about GUI / nodes design. This is one of the topics I'm passionate about and I we want to make Luna the most powerful visual language available. I would love to chat with you about node design and your ideas. If you think it's interesting, I've just created a topic on our forum for this – I would love to read and discuss your thoughts there! https://discuss.luna-lang.org/t/nodes-design-discussion/69