MIDIMod! by Sonic Assault - MIDI FX / Utility Plugin VST
EnvelopR by GuDa audio - Envelope Plugin VST Audio Unit
VFX Envelope
Envelope Sequencer
Free Envelope Shaper Plugins | VST Warehouse
VCV Library - MindMeld ShapeMaster Pro
FabFilter Volcano 3 Help - Envelope generator
Analog Synthesis #3: Envelope Generators
VFX Envelope
Inertia - Sinevibes
Top 9+ Envelope Shaper VST Plugins 2022 | SoundsMag™
Generate - Eventide Audio
FREE VST Synthesizer Plugins (2022 Update) - Bedroom Producers Blog
Besides Serum, are there any synth plugins that offer the ability to control the shape/envelope at which portamento/mono sliding occurs? : r/audioengineering