Embedded OS

From eLinux.org

some of the different operating system that can be embedded:

• eCos - http://sources.redhat.com/ecos/
• Embedded Linux
• uClinux - http://www.uclinux.org
• UZI - http://uzix.sourceforge.net/
• OMU - http://rootprompt.org/article.php3?article=335