Instruments that start the music.
Synthesizers, drum machines and idea machines for macOS and Windows. Made to be opened without a plan and closed with an idea.
Emilie 8
Four synth slots, an FM drum machine and a chaos engine in one window. Play a few notes and Emilie answers with a whole band in your key — then twists your idea into directions you would not have found on your own.
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Oh Derek
Five lanes of drums made from nothing but synthesis: FM kicks, snares, hats, a wave machine and a modal metal engine. Every lane has a dot that moves between four sounds while the pattern plays — so a groove never hits the same way twice.
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Survive
Four oscillators, one joystick between them. Survive glides from wave to wave while you play, with a filter that goes from low-pass to notch, a built-in string machine and effects that make every patch sound finished.
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Stein Strings
The warm, swirling ensemble strings of the classic string machines — with a second, FM layer underneath. Mix the two and the strings get a body, a shine or a glassy edge.
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Dixon
Small, but wild. A punchy mono, unison and poly synth for basses and leads, with a filter that growls, two envelope characters and an arpeggiator that writes the riff for you.
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Small company. Serious sound.
QUASI builds software instruments that are quick to play and deep to explore. Every synth starts with sound and a few good controls, not with a manual.
No accounts, no cloud, no copy protection that gets in your way. Our instruments run on your computer, and nothing about you or your music leaves it.
Questions, bugs, ideas.
Write to us — a line is enough. Tell us what you play on and what you would like next.