WikiWord

WikiWord is a proposed Wikimedia project that would serve as a database for word etymologies in any language.

Kinds of articles:

Single words, with in-depth information (i.e., no abbreviations) and literary examples
List of words with common roots
Overviews of root languages

http://www.wikiword.org/ is unregistered, and it could serve as a portal for various languages.

http://xx.wikiword.org/ could be for XX language etymologies.