- An Advanced Interstellar Propulsion System - A site detailing a unique and novel method for exploring extreme distances in space.
- Field Resonance Propulsion - Postulates magnetic/gravity interactions.
- Gravitational Propulsion Research - Yahoo group covering news, science but also fiction.
- Gyroscopes As Propulsion Devices - Gyroscope based technology could provide an alternative form of propulsion.
- Theory for Gravitic Propulsion - A theoretical discussion of using gravity as a means of interstellar space propulsion. Touches on the theories of matter, energy, and space time.
