VCV Rack

I've been using Rack for a year now and I can certify that is not a wasted download. Rack is the culmination of expertise in modular synthesis knowledge compiled into the best modular software. The total amount of modules is above 1,300 if you only count the free ones. Of course there are also commercial modules available for very reasonable prices. The sound quality is excellent, and so is the versatility of the signal routing that is known to set true modular synthesis apart from the rest. I highly recommend Rack.