Dynamically extensible, Exokernel-based, provides many core services: scheduler, kernel threads, domains, event dispatcher, security mechanisms, primitive VM operations. Blurs distinction between kernels and applications, which traditionally live in u...

Stanford Cache Kernel, supervisor-mode component of V++ OS; caches system objects (threads, address spaces) to raise performance; microkernel alternative, performance equals normal monolithic OSs, yet gives application-level control of system resource...

Suggests solving networking and distributed systems latency via operating system extensibility; University of New Mexico Technical Report.

Brief description, and on-site links to descriptions of Choices, Exokernel, GLUnix, VINO, SPIN.

The Component Based Operating System: based on describing system resources as independent components, lets applications implement their own abstractions, define their own protection schemes, participate in resource management.