The Fundamental plugin pack gives you a basic foundation to create simple synthesizers, route and analyze signals, complement other more complicated modules, and build some not-so-simple patches using brute force (lots of modules). They are also a great reference for creating your own plugins in C++.
Follow the build instructions for VCV Rack.
All source code and scripts are copyright © 2018 Andrew Belt and licensed under BSD-3-Clause by Andrew Belt
The VCV logo and icon are copyright © 2017 Andrew Belt and may not be used in derivative works.
The Fundamental panel graphics in the res/Core in res/ are © 2018 by Grayscale and licensed under CC BY-NC-ND 4.0. You may not create derivative works.