Related systems
Plash is strongly influenced by systems that use CapabilityBasedSecurity. Plash itself uses a capability architecture. The idea of a powerbox user interface comes from the same tradition.
There are two other existing systems that implement FilePowerboxes:
CapDesk, a desktop GUI which is based around the E programming language. E is implemented in Java, and CapDesk uses a Java-based widget set to provide its GUI. Programs must be written in E specially to run under CapDesk.
Polaris, a system for sandboxing Windows applications, such as Word and Internet Explorer. Polaris is proprietary software.
Plash has been influenced by the EROS operating system, a research system which is now being developed under the name CapROS. EROS is based on KeyKOS, which was proprietary. A successor to EROS is being designed, called Coyotos. Like EROS, Coyotos will be free software.