Embedded Software Development with eCos
   By Anthony J. Massa; Prentice Hall, 2003, ISBN 0130354732, with CD. How to build low-cost, royalty-free embedded systems; covers architecture, installing, configuring, coding, debugging, bootstrapping, porting, other open source software components to ext
   http://www.phptr.com/bookstore/product.asp?isbn=0130354732&rl=1

eCos
   Growing article, with links to many related topics. Wikipedia.
   http://en.wikipedia.org/wiki/ECos

eCos Home
   Was Cygnus eCos Sourceware page; Sourceware was Cygnus term for their free, open source software; then was Red Hat page. This was/is the page where open source aspects of eCos are arranged. Descriptions, documents, fora, downloads.
   http://ecos.sourceware.org/

eCos Porting Guide
   Tutorial to get OS up and running on new hardware; the first task when using any new OS. By Anthony J. Massa, Embedded.com.
   http://www.embedded.com/story/OEG20011220S0059/

eCosCentric Ltd.
   Commercial provider, maintainer of eCos RTOS; no royalty or license fee, highly configurable (300+ parameters) for embedded systems, runs on most major processors; founded 2002; software, consulting, development, resources. [Open Source]
   http://www.ecoscentric.com/