Wren modular synthesizer is described as 'Wren is a modular software synthesizer, or a virtual modular soft synth. Developed in Delphi, the code is provided freely and as open source' and is a Music Production App in the Audio & Music category. There are more than 10 alternatives to Wren modular synthesizer for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is VCV Rack, which is both free and Open Source. Other great apps like Wren modular synthesizer are miRack (Paid), Cabbage Studio (Free, Open Source), Voltage Modular (Freemium) and NimSynth (Free, Open Source).
VCV Rack is a modular synthesizer inspired by Eurorack systems. It acts a host for virtual modules which perform various audio processes. E.G. oscillators, filters, envelope generators, sequencers and more that can be connected freely in almost limitless combinations.
Multiphonics CV-1 is a powerful platform for assembling and playing patches. With a simple and straightforward interface, Multiphonics is a fast and efficient creation tool for musicians and sound designers. It is also a great learning environment for newcomers.
Hexen is a virtual modular Eurorack synthesizer for Android featuring 50+ modules in an accessible, touch-focused interface. All of the internal signal paths in Hexen have 32 bit resolution and are clocked at 48KHz. The final rendered audio is 16 bit 48KH.
I wanted to build a music creation tool that is easy to use, accessible and free. Zupiter is a synthesizer and step-sequencer that runs in a browser, meaning you don't even need to download and install any software to use it.