Technopop, Inc. was an American videogame developer, founded by Randel B. Reiss in 1990. It was the first independent American developer for the Sega Genesis, and responsible for most of the early development tools to that system.
Their best known titles are Zero Tolerance for the Genesis, and The Amazing Spider-Man vs. The Kingpin for the Genesis and the Sega CD.
Source: Wikipedia, "Technopop (developer)", available under the CC-BY-SA License.