AudioCipher - AudioCipher is the text-to-midi DAW plugin that transforms words into MIDI melodies and chord progressions.
RIFFER by Audiomodern - A top-rated smart MIDI tool that generates musical Riffs & Sequences. The best and most feature-rich generative MIDI Sequencer on the market.
Melody Generator - Randomly generated MIDI melodies you can use for free
Captain Chords - Write chord progressions in your favorite DAW
Melodya - Melodya - motive editor and melody generator
Plugin Boutique - Inspirational MIDI effect that makes finding chords and progressions intuitive and fun