After Later Audio Threads Eurorack 1U MIDI Module (Yarns)

All of the goodness of Mutable Instruments Yarns, but in an Intellijel 1U format. All four voices of functionality are retained, with 3.5mm jacks for the MIDI input/output. There is also a connector on the back to connect to the Intellijel case jacks.
Summary of Yarns capabilities:
Single voice (note, velocity, modulation, aftertouch, gate, trigger, and clock reset output), two voice, and four voice modes.
Monophonic and polyphonic configurations
SH-101 style sequencer with up to 64 notes.
Microtuning
Transform the CV outputs into digital oscillators.