Kleopatra can be started from KMail's →
menu, as well as from the command line. The Kleopatra executable is
This program is named after Cleopatra, a famous female Egyptian pharaoh that lived at the time of Julius Caesar, with whom she had a child, Caesarion, unacknowledged as his heir.
The name was chosen since this program originates from the Ägypten Projects (Ägypten is German for Egypt). Kleopatra is the German spelling of Cleopatra.