MT-Aerospace in Germany offers four microlauncher concepts with either ground or air-launch capabilities: MTA, WARR, Bloostar (a joint effort with Zero2infinity) and Daneo.
A Falcon 2000S aircraft carries the 4 t Daneo to an altitude of 15 km. This three-stage vehicle reaches orbit using two stages based on solid propellant, and a third stage using liquid propellant.