Homebrew Computer Club
In 1995—three years after Atari's withdrawal of the 2600 from the marketplace—enthusiast Ed Federmeyer released "SoundX", a cartridge to demonstrate the sound capabilities of the system. Federmeyer used the term "homebrew" to describe hobbyist-driven development, inspired by the California Homebrew Computer Club of the 1970s. After designing the cartridge for his own use, Federmeyer advertised it on Usenet, followed by an unlicensed port of "Tetris".