2019 STEM Expo
- Academy of Model Aeronautics
- Adventure 360
- Ameren Missouri BizSavers® Program
- Boeing
- Boeing Sim Trailer
- Boeing/FIRST
- Boy Scouts
- Boys and Girls Clubs of St. Charles County
- Code Ninjas
- Donaldson Company
- Greater St. Louis Federal Executive Board
- International Dark-Sky Association - Missouri Chapter
- Inventor Forge Makerspace
- MA TECH SERVICES, INC.
- Navy Week
- NGA
- ONR
- Parkway School District
- Pfizer
- Rockwood Summit High School
- Saint Louis Science Center
- Southern Illinois University Edwardsville STEM Center
- St. Louis Astronomical Society
- St. Louis County Library
- St. Louis Metro ARES
- State Technical College of Missouri
- The Academy of Racing Science
- UAS Holdings
- USNA
- Watlow
- Wilbur Wright
- Wings of Hope