ISPTech - InSpacePropulsion Technologies 

InSpacePropulsion Technologies (ISPTech) is a Spin-Off from the German Aerospace Center (DLR). During more than 10 years of research and development at DLR's Institute of Space Propulsion we developed two in-space propulsion technologies. Both propulsion technologies operate with so called green propellants which offer significantly reduced hazards and cost compared to conventional propellants.
HyNOx operates with nitrous oxide and a hydrocarbon fuel. In thousands of ambient and vacuum hot firing tests at DLR, thrusters in the thrust classes 1 N, 5 N , 22 N and 200 N were developed and successfully tested. Currently,  propulsion systems for different applications  are under development.
HIP_11 is based on hydrogen peroxide and an ionic liquid fuel. The special feature of HIP_11 is its hypergolicity, that means the oxidizer and fuel spontaneously ignite when getting into contact. HIP_11 is patented by DLR and was tested in hundred of hot firings in 40 N and 200 N battleship thrusters.