Design-S 11-band VST vocoder.
The vocoder contains "Frequency Control" section where you can change the voice character, and "Peak Fall Speed" slider which acts like Release parameter from ADSR envelope.
To use this effect, provide 2 input signals by routing channels in your DAWs mixer.
Left input channel acts like the carrier signal (instrument)
Right input channel acts like the modulator (vocal, drums etc.)
The vocoder was written with "electro" genre in mind ('80s and '90s), and tries to sound as close as hardware classics. Under the hood it uses IIR (infinite impulse response) filters and multithreading. Performance-critical filtering section is written in C++, but GUI is written in C# (.NET).
All parameters (sliders) can be automated.