Why "TYPO3?"

In the late 1990s, after an evening of tireless development, Kasper Skårhøj—the creator of TYPO3—inadvertently entered a typo into the command line, instantly deleting over a week’s worth of work.

After the initial shock at his mistake subsided, Kasper went back to work and eventually realized that the new code was significantly better than what he had lost.

A typo, it seemed, had led him to build an even better product. Struck by this reminder that we can benefit from our mistakes, TYPO3 was born.