The Best MIDI Keyboard Software (Windows, Mac, Linux, Android, iOS) - Musician Wave
Android users get an expressive, powerful MIDI control app in DAW IT - CDM Create Digital Music
Amazon.com: MIDI Controller Bundle - 32-Key USB MIDI Keyboard Controller with Beat Pads, Sustain Pedal and Software Suite - M-Audio Oxygen Pro Mini and SP-2 : Everything Else
Akai Professional MPK Mini MK3 25-Key MIDI MPK MINI MK3 (BLACK)