|Armadillo Aerospace||Working on Sub-orbital spacecraft.||Active||****|
|Bigelow Aerospace||Working on inflatable space habitats.||Active||*****|
|Blue Origin||Working on sub-orbital spacecraft.||Active||***|
|Interorbital Systems||Competing for America's Space Prize.||Active||***|
|JP Aerospace||Attempting to use airships to reach orbit.||Active||**|
|LiftPort Group||The "Space Elevator Companies."||Active||***|
|Scaled Composites||Winner of the Ansari X-prize and will
Virgin Galactic with its sub-orbital ships.
|Solar Skiff||Competing for America's Space Prize.||Planning||*|
|Space Adventures||Arranged the flight of the first ISS tourist|
and serveral more since. Also provides less
spectacular space tourism options.
|Space Exploration Technologies (SpaceX)||Working on low-cost launch systems.||Active||****|
|Virgin Galactic||Will provide flights to sub-orbital space.||Active||*****|
|About the ratings:|
The ratings are kind of nebulous but are meant to convey how successful a company is in relation to the other companies right now. A company's rating can change at any time simply by making notable progress. The rating doesn't reflect the quality of a company's ideas or plans, only their current relative level of success.
***** = Leader
**** = Above Average
*** = Average
** = Below Average
* = Poor