

23 MB
Fluctus is an ultra simple 3-operator FM synthesizer.
Key Features
Completely free. No copy protection, DRM or mailing list signups.
3 operators each with variable brightness control, arranged in a loop: Op 3 modulates Op 2, Op 2 modulates Op 1, and Op 1 modulates Op 3. There’s some really interesting sounds you can create with feedback. Op 3 can also modulate Op 1.
Various effects: soft and hard saturators, multi-mode filter (lowpass and highpass), ping-pong delay and phaser.
Streamlined single page user interface with scaling ranging from 100% to 200%.
Very simple design, perfect for those new to FM synthesis.
Over 60 builtin patches in the factory ROM bank, accessible from the patch browser.
Full support for the new CLAP plugin API.
Optional 2x oversampling
The plugin is available in both 32-bit and 64-bit formats for Windows, and is also available in 64-bit for Linux and macOS (with native Apple Silicon support).
Supported hosts:
The new CLAP plugin format, including support for polyphonic non-destructive modulation. Confirmed working in Bitwig 4.3.
The native FL Studio plugin format, including support for slide/glide notes. Requires FL Studio 9 or newer.
Audio Unit hosts.
Standalone.
Current versions available:
WiN: v1.1.7
MAC: v1.1.10
Linux: v1.1.7
FluctusSynth ( 29 MB )
We’re audio producers and sound designers with over 20 years of experience in the industry. Our team has lived through the entire evolution of digital audio production.
Our mission? To filter out the junk and bring you only the studio-ready free VSTs that actually compete with paid gear. We do the digging so you can focus on creating.
I’ve been digging through the deepest corners of the web looking for something to spice up my drum bus, and…
I’ve been digging through the web deep late last night, and I stumbled upon something special that absolutely needs to…
Yo beatmakers, listen up. Are you tired of your drums sounding like they were programmed by a calculator? We’ve all…
Yo, I’ve been digging through the web and found something special for your arsenal today. We've all been there -…
Are your mixes sounding thin in the low end? I found a fix that is going to save your life.…
I just stumbled upon this gem today, and I had to share it immediately. I've been digging through the web…