SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Epsilon3 logo Epsilon3 Provides AI-powered procedure execution and resource management software for complex engineering, manufacturing, testing, and operations vs Slingshot Aerospace Provides AI-powered space domain awareness, satellite tracking, space traffic coordination, and orbital simulation for government and commercial operators Slingshot Aerospace logo
HEAD-TO-HEAD1 shared sector
Epsilon3 Slingshot Aerospace
Founded 2021 2017
Headquarters Los Angeles, California Colorado Springs, Colorado
Type private private
Status operating operating
Employees 29 155
Total funding $18.8M $148.9M
Latest round Series A Venture
Sectors Space Software & Mission Tools, Satellite Manufacturing Space Domain Awareness, Space Defense Systems, Space Software & Mission Tools
Products listed 6 16
Federal contracts
Launches
Leaders listed Laura Crabtree, Max Mednik, Audrey Fraijo Tim Solms, Scott Humphrys, Andrea Powers
News mentions 0 15
SHARED SECTORS
FREQUENTLY ASKED

How do Epsilon3 and Slingshot Aerospace compare?

Both companies work in Space Software & Mission Tools. Epsilon3 was founded in 2021 and Slingshot Aerospace in 2017.

Which is larger, Epsilon3 or Slingshot Aerospace?

Slingshot Aerospace reports the larger workforce, with 155 employees versus 29.

Numbers refresh on every render against the live Space Index database. Federal contract data from USAspending.gov; launches from LaunchLibrary2.