Research Operating Systems - Short, annotated, alphabetically sorted list and links, part of larger system.comp.os.research FAQHOPE: Hopefully Optimistic Programming Environment - A Programming Model for Optimism. Latency is being held back by the speed of light, more so in distributed systems. Optimistic algorithms 'guess' results of operations and proceed in parallel with confirmation of the guess; an effective way to hide latency of slow operations with predictable outcomes.
Novel OS Work - By Christopher Browne. Very brief, clear descriptions and some critiquing of many OSs, mostly research types, with many links. Puts much current activity in larger context.
Hydra - Early Capability-based OS kernel for multiprocessing environments, gave fine-grained protection. Goals: universal applicability, absolute reliability.