SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Busek logo Busek Designs and manufactures electric propulsion systems for spacecraft, including Hall effect, electrospray, RF ion, and green monopropellant thrusters vs EnduroSat Designs, builds, and operates software-defined small satellites and shared satellite platforms for commercial and scientific missions worldwide EnduroSat logo
HEAD-TO-HEAD1 shared sector
Busek EnduroSat
Founded 1985 2015
Headquarters Massachusetts Sofia, Bulgaria
Type private private
Status operating operating
Employees 107 325
Total funding $200K $181.6M
Latest round Grant Series C
Sectors Space Propulsion, Satellite Components & Subsystems Satellite Manufacturing, Satellite Components & Subsystems
Products listed 9 37
Federal contracts — —
Launches — —
Leaders listed Vlad Hruby, James Szabo, John Meikle Raycho Raychev, Victor Danchev, Emmanuel Sauzay
News mentions 0 6
SHARED SECTORS
Satellite Components & Subsystems
FREQUENTLY ASKED

How do Busek and EnduroSat compare?

Both companies work in Satellite Components & Subsystems. Busek was founded in 1985 and EnduroSat in 2015.

Which is larger, Busek or EnduroSat?

EnduroSat reports the larger workforce, with 325 employees versus 107.

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