VCV Rack is a
free open-source virtual
modular synthesizer: multiple modules can be connected to synthesize a sound. By default, the software contains several
VCOs,
LFOs, mixers, and other standard synthesizer modules. However, more can be added as plugins through the VCV Rack website. Version 1.0.0 added a stable API, a multithreading engine Version 2.0.0 was officially announced in September 2021 and released on November 30, 2021. ==References==