Right now this is just a set of links to other projects, but hopefully we will get reviews up for the various projects and products shown.
http://beagleboard.org/
http://www.hawkboard.org/
http://www.openstomp.com/wiki/index.php?title=Main_Page
http://audiopint.org/
http://line6.com/tcddk/
http://www.chameleon.synth.net/english/chameleon/
http://sites.google.com/site/nextaudiodsp/
http://web.media.mit.edu/~nvawter/thesis/
http://www.generalguitargadgets.com/
http://www.diystompboxes.com/wpress/
http://www.buildyourownclone.com
http://www.muzique.com/clones.htm