Zrythm is a digital audio workstation designed to be featureful and easy to use.
Vital is a spectral warping wavetable synthesizer with drag'n'drop modulation workflow and animated preview of the synth's inner workings where needed. Comes with many modulation sources (including audio-rate), MPE support and FX chain.
It just sounds better! The beauty is in its simplicity, yet behind the minimal exterior lies a powerful music player with a ton of features & support for all audio formats you should ever need.
A VST (plus AudioUnit on OSX) plugin host designed for live use. Based on the JUCE 'audio plugin host' code, heavily modified to better suit my purposes.
AudioKit Reverb is a simple pro-sounding reverb plugin for your iOS device.
Apple’s free digital audio mixing application, AU Lab, can be used as a host application for Audio Unit effects, including the AURoundTripAAC plugin, one of the Apple Digital Mastering tools.