eCos – Open Source Real-Time Operating System for Embedded Applications
http://ecos.sourceware.org/

eCos is an open source, royalty-free, real-time operating system intended for embedded applications. The highly configurable nature of eCos allows the operating system to be customised to precise application requirements, delivering the best possible run-time performance and an optimised hardware resource footprint. A thriving net community has grown up around the operating system ensuring on-going technical innovation and wide platform support. This has been added to World Wide Web Reference Subject Tracer™ Information Blog. This has been added to Script Resources Subject Tracer™ Information Blog.