A typo domain generator or tool provides an easy way to generate hundreds of misspellings of a domain name. The tool replicates natural behavior of a person typing search terms or domains using a standard “QWERTY” keyboard layout (and sometimes other layouts).
Typo domain tools go further than keyword typo tools as they give informations about domain registration.
Typo domain generator tools are used by legitimate domain owners who want protect their brand / domain or by typosquatters. See typo domain for more details.
An example of typo domain generator: