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Approximately 10,000 commercial software titles were made for the Commodore 64 including development tools, office productivity applications, and games. Various C64 emulators allow anyone with a modern computer, or a compatible game console, to run these programs today. The machine is also credited with popularizing the computer demoscene|demo scene. The C64 is still used today by some computer hobbyists

In Europe, the primary competitors to the C64 were the British-built [[ZX Spectrum|Sinclair ZX Spectrum]], BBC Micro computer and the [[CPC|Amstrad CPC 464]]. In the UK, the Spectrum had been released a few months ahead of the C64, and was selling for less than half the price. The Spectrum quickly became the market leader and Commodore had an uphill struggle against the Spectrum as it could not rely on undercutting the competition. The C64 debuted at £399 in early 1983, while the Spectrum cost £175. The C64 would later rival the Spectrum in popularity in the latter half of the 1980s, eventually outliving the Spectrum, which was discontinued in December 1990.