PetName Systems are naming systems that possess all three naming properties - global, secure, and memorable . Software that uses such a system can satisfy all three requirements. Examples General software CapDesk Polaris Firefox Extension There's an extension available for Firefox that allows petnames to be assigned to secure websites. PetName Markup Language The PetName Markup Language (PNML)'s an XML proposal for using Petname systems ubiquitously. Tags PNML consists of two tags: pet-name-st… (More on Petname)