A semi-modular monosynth in a browser tab: two anti-aliased oscillators, two Sallen-Key filters, two envelopes, a mod generator and an external signal processor. The 35-socket patch bay is the point. You drag real cables, and plugging one in OVERRIDES the normalled default rather than adding to it, which is what makes a semi-modular a semi-modular and what browser synths usually skip. 35 factory patches, MIDI in, shareable patch links, a printable patch sheet. Free, no account, no install.