An Advanced Interstellar Propulsion System
   A site detailing a unique and novel method for exploring extreme distances in space.
   http://www.ovaltech.ca

Antigravitation Engine Site
   Describes Chinese theories, experiments and data analyses of an antigravitation engine and the related phenomena.
   http://xczhx.c59.zgsj.com/indexEnglish.htm

Field Resonance Propulsion
   Postulates magnetic/gravity interactions.
   http://www.keelynet.com/energy/holt1.htm

Gravitational Propulsion Research
   Yahoo group covering news, science but also fiction.
   http://tech.groups.yahoo.com/group/gravitationalpropulsionstevenson/

Gyroscopes As Propulsion Devices
   Gyroscope based technology could provide an alternative form of propulsion.
   http://www.gyro-scope.co.uk/

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.
   http://members.shaw.ca/mike.anderton

Unproven Space Concepts
   A collection of works aimed at the conquest of space. Including laws on motion, energy and time plus a design for an interstellar spacecraft.
   http://krism.idx.com.au