StatusNet - The StatusNet platform enables communities, brands and organizations to incorporate micro messaging...
Listography - Create your lists, preserve your story, and stay inspired.
Octopress - A static blogging framework for hackers, based on Jekyll
List Challenges - Earn points for your life experiences. Find lists that interest you, and mark off what you've done.
TidyCMS - TidyCMS is a lightweight, static html file CMS.
Bucketlist.org - Log and catalog all the stuff you want to accomplish before you expire.