- Fiasco - Preemptible, realtime, 2nd-generation microkernel, fast, maintainable, readable, supports hard priorities, uses non-blocking synchronization for kernel objects to guarantee priority inheritance, ensure runnable high-priority processes never block waiting for lower ones; rework of L4 interface. [Open Source, GPL]
os.inf.tu-dresden.de/fiasco
- L3-L4 Microkernel Family - Lean, with fast, message-based, synchronous IPC, simply-used external paging mechanisms, security mechanism based on secure domains: tasks, clans, chiefs. Kernels try to implement only a minimal set of abstractions on which OSs can be built flexibly. L3 has system-wide persistence.
os.inf.tu-dresden.de/L4
- L4 Microkernel - L4/MIPS: stable L4 for MIPS R4x00 processor, may be fastest kernel for this architecture. L4/Alpha: begun at Technical University of Dresden, SMP version released. Linux ports: L4/MIPS, L4/Alpha underway.
www.cse.unsw.EDU.AU/~disy/L4
- L4-Hurd: Porting GNU Hurd to L4 - Free Software Foundation project: page has brief pro and con description, many links.
www.gnu.org/software/hurd/l4-hurd.html
- L4Ka Project - L4-based microkernel systems, for embedded systems to huge servers. L4: a tiny, fast, second generation microkernel using hierarchical external pagers and guarded page tables. Goals: create, prove, establish new methodology for systems that helps manage growing complexity and minimizes legacy dependence.
l4ka.org
- SawMill: A Highly-Configurable Operating System - Goal: address the complexity of building and maintaining a variety of custom OSs. As embedded and personal systems grow more common, the need to make OSs customized to many device and application needs rises. At IBM T.J. Watson Research Center.
www.research.ibm.com/sawmill
- SourceForge: L4Ka Microkernel - The L4Ka microkernel is an L4 compatible kernel running on many platforms: ARM; MIPS; 68k, PPC; x86. A port of Linux atop an L4Ka microkernel exists.
sourceforge.net/projects/l4ka
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