When local ObjectCapabilityModel islands are hooked together by a PasswordCapabilityModel cryptographic protocol. Distributed object-capability systems include: * DCCS (http://www.webstart.com/jed/papers/DCCS/) * MachOs (ftp://ftp.cs.cmu.edu/project/mach/doc/unpublished/netmsgserver.ps) * EeLanguage * MozartProgrammingSystem (not capability secure in itself; but there is a related project called the MilosProject which adds capabilities to Mozart/Oz) * ToonTalk * TheClientUtility ---- CategorySecurity CategorySecurityModel