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 Exotrail Designs electric propulsion systems for small satellites and operates orbital transfer vehicles for last-mile delivery and in-orbit services Exotrail logo
HEAD-TO-HEAD1 shared sector
Epsilon3 Exotrail
Founded 2021 2017
Headquarters Los Angeles, California Massy, France
Type private private
Status operating operating
Employees 29 141
Total funding $18.8M $74.6M
Latest round Series A Series B
Sectors Space Software & Mission Tools, Satellite Manufacturing Space Propulsion, Space Software & Mission Tools, Space Transportation & Logistics
Products listed 6 9
Federal contracts — —
Launches — —
Leaders listed Laura Crabtree, Max Mednik, Audrey Fraijo Jean-Luc Maria, Paul Lascombes, David Henri
News mentions 0 0
SHARED SECTORS
Space Software & Mission Tools
FREQUENTLY ASKED

How do Epsilon3 and Exotrail compare?

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

Which is larger, Epsilon3 or Exotrail?

Exotrail reports the larger workforce, with 141 employees versus 29.

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