These are the individual projects that make up the Yocto Project. Each of these holds a key role in developing embedded Linux, and the Yocto Project works to make all of them interoperable and useful.
Matchbox is an Open Source base environment for the X Window System running on non-desktop embedded platforms such as handhelds, set-top boxes, kiosks and anything else for which screen space, input mechanisms or system resources are limited.
Matchbox consists of a number of interchangeable and optional applications that can be tailored to a specific non desktop platform to enhance usability in a 'constrained' environment.
Find the Matchbox sources on http://git.yoctoproject.org/
This project is now fully merged into The GNU C Library. Archives are maintained by the Yocto Project at http://www.eglibc.org/.
Embedded GLIBC (EGLIBC) was a variant of the GNU C Library (glibc) that was designed to work well on embedded systems. EGLIBC strived to be source and binary compatible with glibc. EGLIBC's goals included reduced footprint, configurable components, better support for cross-compilation and cross-testing.