There are 6 finalists for space station resupply prize of $500 million.
The finalists are:
tspace - space composite, (burt rutan/spaceship one involved team) entry for the NASA's Commercial Orbital Transportation Services $500 million prize. T-space has made rapid prototypes, full size mockups and 23% scale for air testing.
CXV is in the center
Texas-based Spacehab, which built research modules for the space shuttle and is offering its Apex line of spacecraft.
Oklahoma-based Rocketplane Kistler, which would adapt the Kistler K-1 reusable launch vehicle.
Rocketplane Kistler K1
California-based Space Exploration Technologies, or SpaceX, which is developing its Falcon 9 rocket as well its Dragon capsule for cargo and crew.
SpaceX Dragon capsule
California-based SpaceDev, which worked on SpaceShipOne's hybrid rocket engine and is now proposing its Dream Chaser mini-shuttle concept.
Would look like this design but with updated engines and materials
Andrews Space of Seattle, which already has received an Air Force contract to flesh out its Hybrid Launch Vehicle concept.
Other space related:
Alternative launch: slingatron and magnetic launch
Latest advanced space technology studies
Space elevator update
Thoughts on colonizing space
Magnetically inflated cables for making big and useful structures in space
Nanotechnology enhanced space propulsion
Background information for space related predictions