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Submicrokernel

Computers > Software > Operating Systems > Submicrokernel

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BRiX (25)
Forth (199)
Nemesis (3)
Oberon (70)
Object-Oriented (137)

PURE (3)
Self (17)
Smalltalk (348)
SPIN (25)
Squeak (131)

Stella (317)
ThreadX (4)
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Web Pages

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	MIT Exokernel OS - http://www.pdos.lcs.mit.edu/exo.html Puts applications in control, runs 10x or more faster. Exopc and XOK versions run on x86 PCs. ExOS library gives user-level extensible implementation of Unix OS, so most applications compile and run with no change. Download. [Open Source, MIT]
	Nanokernel - http://en.wikipedia.org/wiki/Nanokernel Growing article, with links to many related topics. Wikipedia.
	Exokernel - http://en.wikipedia.org/wiki/Exokernel Growing article, with links to many related topics. Wikipedia.
	KeyKOS Nanokernel Architecture - http://www.cis.upenn.edu/~KeyKOS/NanoKernel/NanoKernel.html Thorough architectural analysis of persistent, pure capability, for IBM S/370 mainframes, by Key Logic, Inc; text, diagrams, comparison, references, bibliography, contacts.
	Exokernel: An Operating System Architecture for Application-Level Resource Management - http://citeseer.ist.psu.edu/engler95exokernel.html Traditional OSs limit application performance, flexibility, functionality by fixing interfaces and implementations of OS abstractions such as interprocess communication and virtual memory. Exokernel address this via application-level management of physical resources. [ResearchIndex]

	miray Software - http://www.miray.de/home/ Makes µnOS: 72k microkernel on 8k nanokernel client/server architecture based on OOP framework, symmetric multithreading, multitasking, priority based scheduling, fully interruptible, separated address spaces, and full memory protection. Free download.
	dr'ex: SourceForge - http://sourceforge.net/projects/drex/ Information, news, forum, CVS, downloads. [Open Source, GPL]
	Miranda - http://miranda-os.sourceforge.net/ Planed features: Exokernel architecture, object-oriented, POSIX compliant, intuitive GUI, and best technologies: journaled main filesystems, LibOS modular library. Development documentation. [Open Source, LGPL]
	Miranda: SourceForge - http://sourceforge.net/projects/miranda-os/ Downloads, announcements, and a forum. Programming languages: Assembly, C, and C++.
	Elysium - http://elysium.sourceforge.net/ Main idea: enforce no abstractions, rather, have them as options, to all levels of system: hardware, kernel and file services, ways users interact with system; based on exo principles. Descriptions, news. [Open Source]

	Unununium Operating Engine - http://uuu.sourceforge.net/ Claimed as radical new approach to OSs: no-kernel, self-modifying cells (like objects); single address space, useful where memory and CPU power is low, and maybe for AI. Written in self-modifying, modular assembly language. [Open Source, BSD]
	dr'ex - http://drex.sourceforge.net/ Exokernel written in C/asm for the x86 architecture. Released under GPL.

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