GPS (Global Positioning System) - Originally developed by the US Department of Defense for military use, GPS became available for civilian use in the 1980s.
Internet - The precursor to the Internet was ARPANET, which was developed by the US Department of Defense's Advanced Research Projects Agency (ARPA) in the 1960s. The technology was intended to facilitate communication between research institutions and military installations, and it eventually evolved into the modern-day Internet.
Jet engine - Jet engines were developed by both the US and the Soviet Union during the Cold War for military aircraft.
Ballistic missiles - Both the US and the Soviet Union developed ballistic missiles during the Cold War as a means of delivering nuclear weapons.
Stealth technology - Developed primarily by the US during the Cold War, stealth technology refers to technologies and techniques used to make aircraft, ships, and missiles less visible to radar and other detection systems.