Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
hashtags.org - Hashtag is an extensive hashtag research platform for analytics and tracking of hashtags, providing...
Anchor CMS - Free and lightweight blogging system
HashtagWiki.com - Hashtag Generator Tool
Textpattern - Textpattern is an elegant content management system that is free, open source software.
HSHTG - Generate, manage, save and edit hashtags just in a few finger tap