WordPress - WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
WiX - Create a free website with Wix.com. Customize with Wix' website builder, no coding skills needed. Choose a design, begin customizing and be online today
Anchor CMS - Free and lightweight blogging system
SquareSpace - Squarespace is the easiest way for anyone to create an exceptional website. Pages, galleries, blogs, e-commerce, domains, hosting, analytics, 24/7 support - all included.
Textpattern - Textpattern is an elegant content management system that is free, open source software.