Creakbox is a free software synthesizer developed by Bioroid. Available format(s): VST for Windows, macOS.
Creakbox Bassline is a 303 like mono synth with a built in sequencer.
Features:
- 1 oscillator (Square/Saw).
- Resonant filter.
- Envelope mode & Decay.
- Accent.
- Slide(Glide).
- Step sequencer with a 5 octave range (Can be set to a BPM (40 – 300) or to Sync with your sequencer).
http://www.bioroid.com/vst/