dr'ex: Exokernel written in C/asm for the x86 architecture. Released under GPL.
dr'ex: SourceForge: Information, news, forum, CVS, downloads. [Open Source, GPL]
Elysium: 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]
Exokernel: An Operating System Architecture for Application-Level Resource Management: Summary of paper mentioning overview and design issues.
Exokernel: An Operating System Architecture for Application-Level Resource Management: 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]
Miranda: 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: Downloads, announcements, and a forum. Programming languages: Assembly, C, and C++.
miray Software: 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.
MIT Exokernel OS: 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]
TUNES Project: No-Kernel: Unique description of operating systems without kernels, links.
Unununium Operating Engine: 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]