DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
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.
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
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
Confluence - Confluence is content collaboration software that changes how modern teams work
WordPress.com - Create a free website or build a blog with ease on WordPress.com. Dozens of free, customizable, mobile-ready designs and themes. Free hosting and support.