Educational Organizations
- Ben-Gurion University of the Negev, Israel
- Blekinge Institute of Technology, Sweden
- California State Polytechnic University, Pomona
- Canadian Science Center for Human and Animal Health, Canada
- Cape Peninsula University of Technology, South Africa
- Capitol College
- Cornell University's Flux Cube mission
- Cranfield University, United Kingdom
- Delfi-C3 Mission at Delft University of Technology, the Netherlands
- Drexel University
- East Stroudsburg University
- Georgia Insititute of Technology
- Imperial College, United Kingdom
- Institute of Robotics and Technical Cybernetics, Russia
- National Institute for Aerospace Technology (INTA), Spain
- Harvey Mudd College
- Herzliya Space Laboratory, Israel
- Indian Institute of Technology, India
- Iowa State University
- USC Information Sciences Institute
- Institute of Space Technology, Pakistan
- Istanbul Technical University (ITU), Turkey
- The Johns Hopkins University Applied Physics Laboratory
- Kentucky Science & Technology Corporation
- Kingston University, United Kingdom
- Korea Aerospace Research Institute (KARI), Koriea
- Korea University of Technology & Education, Korea
- Kyung Hee University, Korea
- Massachusetts Institute of Technology (MIT)
- Medgar Evans College of The City University of New York
- MIT Lincoln Laboratory
- Morehead State University
- Mullard Space Scienc Laboratory of the University College London, UK
- Nanyang Technological University, Singapore
- Narvik University College, Norway
- National University of Singapore , Singapore
- Naval Postgraduate School
- Norwich University
- Observatorio Astronomico, Universidad Sergio Arboleda, Colombia
- Oregon State University
- Polytechnic University of Ejercito (ESPE), Ecuador
- Polytechnic University of Puerto Rico (PUPR)
- Rensselaer Polytechnic Institute
- Research Foundation of the City University of New York (RFCUNY)
- Rochester Institute of Technology
- Royal Military College of Canada
- Ryerson University, Canada
- Saint Louis University
- Siena College
- Space Systems Development Laboratory (SSDL) at Stanford University
- KatySat
- StardotSat uses Pumpkin's Salvo RTOS on Microchip PIC18
- MAST also uses Pumpkin's Salvo RTOS on Microchip PIC18
- Space Dynamics Laboratory's SU-Sat at Utah State University
- Space Science & Engineering Laboratory (SSEL), Montana State University
- St. Louis University (SLU)
- Technological Campus of the University of Navarra (TECNUN), Spain
- Thomas Jefferson High School for Science and Technology, Alexandria, Virginia
- Tsinghua University, China
- University of Alabama at Huntsville
- Universidad Distrital, Colombia
- School of Engineering and Electronics at the Universty of Edinburgh, Scotland
- United States Military Academy (West Point)
- Universidad Politecnica de Catalunya, Spain
- Universiteit Stellenbosch, South Africa
- University of Applied Sciences of Southern Switzerland (SUPSI)
- University of Arizona
- University of British Colombia
- University of Bucharest, Romania
- University of California, Berkeley
- University of Colorado, Boulder
- University of Colorado, Denver
- University of Florida's Inflate-a-Brake project
- University of Hawaii's Hawaii Space Flight Laboratory
- University of Leicester's CubeSat Project
- University of Liège, Belgium
- University of Manitoba, Canada
- University of Michigan
- University of Mississippi
- University of Nevada at Reno
- University of New Mexico
- University of Oklahom
- University of Surrey, United Kingdom
- University of Sydney, Australia
- University of Texas at Austin
- University of Texas at Dallas
- Politecnico di Torino, Italy
- Vanderbilt University
- Vermont Technical College
- Virginia Tech
Commercial Organizations, Non-Profit Entities & U.S. and Foreign Governments
- a.i. solutions
- Advanced Solutions, Inc.
- Aerojet
- The Aerospace Corporation
- Aerospace Testing Alliance (ATA)
- Air Force Institute of Technology (AFIT)
- Air Force Research Lab (AFRL)
- Arkyd Astronautics
- Astronautic Technology (M) Sdn Bhd (ATSB), Malaysia
- Aurora Flight Sciences
- BAE Systems
- The Boeing Company
- Composite Technology Development
- Comtech AeroAstro, Inc.
- Creare, Inc.
- Ecliptic Enterprises
- Ecuadorian Civilian Space Agency
- General Dynamics Advanced Information Systems
- Hawk Institute for Space Sciences (HISS), a division of Maryland Hawk Corporation
- Honeywell Aerospace
- Inland Northwest Space Alliance (INSA)
- IntelliTech Microsystems
- ISIS, the Netherlands
- Israeli Nano-Satellite Association (INSA), Israel
- Japan Aerospace Exploration Agency (JAXA)
- Lockheed Martin Corporation
- Los Alamos National Laboratory (LANL)
- LUXSPACE Sarl, Luxemburg
- Magna Parva Ltd, United Kingdom
- Malaysian National Space Agency (MNSA)
- Maryland Aerospace, Inc. (MAI)
- MDA Corporation, Canada
- Miltec Missiles and Space Company, a division of Miltec Coporation
- Ministry of Technology, Science & Innovation (MOSTI), Malaysia
- NASA Ames Research Center (NASA ARC)
- NASA Goddard Space Flight Center (NASA GSFC)
- NASA Kennedy Space Center (NASA KSC)
- NASA Wallops Flight Facility (NASA WFF)
- National Space Research and Development Agency, Nigeria
- Northrop Grumman Corporation
- Orbital Sciences Corporation
- Physical Optics Corporation
- Raytheon Company
- Romanian Space Agency (ROSA)
- Sandia National Laboratory
- Sierra Lobo, Inc.
- Sigma Space Corporation
- SILICOM, France
- Southwest Research Institute (SWRI)
- Space-SI
- Stanford Research International (SRI)
- TEKEVER, Portugal
- UK Space Agency
- United States Department of Defense (DoD)
- United States Naval Research Laboratory (NRL)
Inclusion in this list only indicates that a company has at one time purchased a Pumpkin CubeSat Kit product, and does not imply an endorsement of Pumpkin's CubeSat Kit products. Due to contractual obligations forbidding the listing of organizations on our website, several of Pumpkin's DoD customer are not listed above.