Blue Origin specializes in aerospace and spaceflight services, focusing on controlling the cost of access to space. It designs and manufactures reusable rocket engines, launch vehicles, in-space systems, and lunar landers to facilitate space exploration and development. Its primary market includes government and commercial entities in the space exploration and satellite deployment sectors. It was founded in 2000 and is based in Kent, Washington.

Exos Aerospace specializes in suborbital space access and operates within the aerospace industry. The company provides launch services using reusable rockets and offers options for orbital transfer and space transportation, utilizing Type 5 carbon composite tanks. It serves sectors that require space access for scientific, educational, and exploratory purposes. It was founded in 2014 and is based in Greenville, Texas.

United Launch Alliance specializes in space launch services, providing reliable access to space with a focus on advanced rocket technology. The company offers a range of rockets, including the next-generation Vulcan, as well as the Atlas V, Delta IV, and Delta II, which are designed to deliver payloads into orbit with precision and reliability. United Launch Alliance primarily serves the needs of commercial spaceflight, national defense, and scientific research sectors. It was founded in 2006 and is based in Englewood, Colorado.

Pythom Space focuses on human space exploration within the aerospace industry. The company develops a complete space transportation system, including reusable rockets, spaceships, and landers designed for orbital and interplanetary missions. Pythom Space's offerings cater to the needs of satellite launch services and in-space manufacturing. It was founded in 2020 and is based in Bishop, California.

Relativity Space operates a commercial launch company that focuses on the aerospace industry. The company specializes in providing launch services using reusable rockets and manages additive manufacturing to reduce vehicle complexity and production costs. Relativity Space primarily serves the space infrastructure sector with its launch capabilities. It was founded in 2016 and is based in Long Beach, California.

Firefly Aerospace focuses on end-to-end space transportation within the aerospace industry. The company offers a range of services, including the launch of small- to medium-lift vehicles, lunar landers, and orbital vehicles designed to deliver payloads to the lunar surface and provide on-orbit servicing. Its services cater to government and commercial customers seeking affordable, responsive, and reliable access to space. Firefly Aerospace was formerly known as Firefly Space Systems. It was founded in 2017 and is based in Cedar Park, Texas.