Modulus

Modulus is a polyphonic synth built for Ableton Live by Stephen Black, designed to be super flexible and great for sound design. You can switch between various waveforms, mess with both frequency and amplitude modulation, and shape things using an envelope filter for detailed control over attack, decay, sustain, and release.
One of Modulus's features is that you can set the FM and AM to run either as standard LFOs or sync them up with Live's tempo. That opens up a lot of creative options—everything from wild free-running modulation to tight, rhythmic patterns.

Right now it's great for deep basses, pads, weird textures, and evolving leads. I'm about to start working on a bigger update, but before I tinker too much I wanted to post where it's currently at. I'm planning to add more assignable envelopes for different parts of the signal path, and also streamline the UI a bit to make it more intuitive.