Minimal Audio are offering their Rift Filter Lite which offers 24 filter types with morphing, vowel, phaser, peaking modes available. It's free for early adopters, which means either for a limited time or for a limited number of downloads.
According to their website, it offers:
Stereo Filtering - Instantly create huge stereo effects with Rift Filter Lite's Spread control.
Tuned Resonance - Create musical resonance effects with easy-to-use pitch snapping.
Awesome Visualizations - See your filter in stereo with crystal-clear visual feedback.
Key Tracking - Snap Rift Filter Lite's Cutoff to incoming MIDI, and play it like an instrument.
Filter Mix - Get the perfect balance with global dry wet control.
Rift Filter Lite is available to Windows and Apple users with an internet connection required for activation. Get it while you can here: https://www.minimal.audio/products/rift-filter-lite
Oh and NAMM too
And a host of other features too
With Jim Heywood
ADSR, Function Generator, LFO, & Mixer