UUID Generator 1.0b2 generates Universally Unique Identifiers (UUIDs). The new release has preferences to select how to format the output and where to output it to.

What do you think it means? It's a line from a movie. The UUID, as implemented, is neither universally unique nor exceedingly unlikely, because people keep implementing it wrong.

GUID (or UUID) is an acronym for ‘Globally Unique Identifier’ (or ‘Universally Unique Identifier’). It is a 128-bit integer number used to identify resources.