….is a free arpeggiator for Kontakt.
Rhythm and Pitch Generator is a free analog-style arpeggiator that can be run at audio rate for a quirky sound generator or locked to a tempo to generate inspiring melodic and rhythmic phrases based on a seed-based random sample-and-hold.
RandARP is a free VST plugin arpeggiator with many randomization features, allowing incoming notes or chords to be manipulated in various rhythmic ways.