Monoglyph Audio · VST3 and AU plugins for macOS and Windows
Plugins that treat
rhythm as a language.
Small, focused audio plugins. Each one does one thing and shows you exactly what it's doing to your sound.
Plugins
One idea per plugin.
Each one is engineered around a single idea and shares one language. Buy them separately, or together at checkout.
All plugins- Out now
Strand
Rhythmic gate
- Coming soon
Cadence
Pattern modulator
- Out now
Refrain
Pattern sequencer
Type a rhythm.Hear it gate.
A gate you program in one line of pattern notation. Euclid, alternation and probability are one symbol each. Mutate it with intent, let it evolve on the bar.
VST3 · AU · macOS and Windows · 14-day trial

Engineering
Most plugins show you a picture of what they might be doing. Ours show you the engine.
A Monoglyph plugin is one idea carried all the way through: written as a library, drawn from the engine, tested in the hosts you use, and sold plainly. Six things we hold to, and how you can check each one.
01
The display is the engine
The interface doesn’t illustrate the audio thread, it reads it. The same code that moves a gate draws it, and your audio is on screen inside the effect.
one groove function, shared by engine and display
02
The engine is a library
Every plugin’s core is plain C++ with no interface and no framework, tested on its own before a single knob exists. The plugin is a shell around it.
1,544 checks · sanitizers in CI
03
Deterministic
Randomness is seeded, not rolled. Drift, probability and mutation repeat exactly. The same project sounds the same tomorrow, on another machine, in another host.
hash-seeded · repeatable per bar
04
Real-time safe
Nothing allocates and nothing locks on the audio thread. A pattern change hands over atomically, on the cycle boundary, never mid-bar.
atomic handoff · cycle-aligned
05
Tested where you use it
Validated the way hosts validate: pluginval at strictness 10 and Apple’s auval on every release build, sanitizer-checked tests on every commit, signed and notarised packages for macOS and Windows.
pluginval 10 · auval · ASan/UBSan CI
06
Open by default
Presets are JSON you can read in a text editor. The notation is a public language, and the table on this site is the file the plugin ships, drawn by a port of its parser.
JSON presets · TidalCycles notation · same notation file
Monoglyph
Two lines.
One standard.
Monoglyph Audio is the plugin line of Monoglyph Ltd, a software company in England, UK. Everything we ship is designed, written, tested and supported under one roof, and beyond a once-a-day licence check none of it phones home.
- Company
- Monoglyph Ltd
- Based
- England, UK
- Founded
- 2026
- Support
- hello@monoglyphaudio.com
Small, focused audio plugins. VST3 and AU for macOS and Windows.
A sight-reading trainer for musicians. Desktop app, macOS and Windows.
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