Intellijel Designs uMIDI

This is the best MIDI module for interfacing eurorack with software. I use it with a 3row case and it gives me 3 modulation lanes that I can automate from the DAW and assign freely: velocity, mod wheel, and aftertouch (this last one can send a different CC set within Intellijel's online configuration tool). Clock division is also a great option for the user. Build quality is solid. Highly recommended for small/medium setups.

I make music on my PC so this module is the most important and usable in my setup. Everything is great about this module. At first I thought it's overpriced, but one I received it I realized that it might be even underestimated. Lots of options to control your eurorack patches along with perfect quality and handling gave me the most positive emotions out of all my modules. Easily the best PC+Eurorack module out there.

It's only difficult to upgrade, but it works without any issues the way I got it.