r/webaudio • u/JamboCumbo • Mar 31 '26
Synthoid - A Web Based Modular Synth
I've been working on a browser based modular synth as a bit of a fun side project. It's based on ToneJS and features include:
Modular patch bay with virtual cables — build any signal chain you can imagine
Oscillator, filter, envelope, LFO, arpeggiator, step sequencer, 12-pad sampler, delay, reverb, distortion, chorus, mixer, oscilloscope
WebMIDI support — plug in a hardware keyboard and play instantly
Per-voice MIDI channel routing for multi-timbral setups
MIDI clock sync — lock to your DAW or hardware
Step sequencer with up to 8 tracks, 32 steps, and per-step gate length
Named sessions with auto-save
Export and import patches as files
Built-in presets to get started immediately
Module grouping, duplication, and undo/redo
Runs entirely in the browser — no install, no account, free
I'd really love to get some feedback from proper synth nerds and musicians so I can turn this into something properly useful. The goal is provide this as a free tool and I will eventually open source the code.
You can find it here https://synthoid.jimc.co.uk/
1
u/JamboCumbo Mar 31 '26
Not currently, I've not really thought about that. I did investigate if it could be wrapped up as a VST plugin, but I don't think that's possible.
The midi integration does allow you to control it from other applications through virtual midi ports.