

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 just stumbled upon this gem today while digging for something to add a little character to my output chain,…
Are your mixes sounding a little too two-dimensional? I found a fix. You know the struggle - you want that…
Are your mixes sounding washed out because you picked the wrong mic pattern during the session? We've all been there—you're…
Yo, what's good producers? Let’s talk about a real struggle we all face in the studio. You spend hours layering…
I’ve been digging through the deep corners of the web recently, hunting for something specific to add to my arsenal,…
Yo, what's good creators? Let’s keep it 100 for a second - are your mixes sounding a little thin? Are…