StatusNet - The StatusNet platform enables communities, brands and organizations to incorporate micro messaging...
Exposure - Turn your pictures into art.
Octopress - A static blogging framework for hackers, based on Jekyll
Shareist - Shareist is a content marketing platform to plan, research, publish, and share social media posts.
TidyCMS - TidyCMS is a lightweight, static html file CMS.
Known - Publish blog posts, photos and media to your own site, and syndicate it to your social networks. Keep everything on your own site.