Matches valid minecraft usernames, one per line

Allows for easy removal of metadata in WP export file

matches keyword data

It validates almost all URL.

code for selection of specific classes.

All strings(name, surname, street..) which are exeptepted by the Schufa SLIM-2 API (German identity check system)

find good french firstname single or composed

Here is a pattern for all kind of Moscow and Moscow Region phones with or without additional number.

This regexp will check for valid swedish postnumber