PictureThat - Fill your walls with art and photos in AR ๐จ
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Snap Art - Snap's augmented reality platform
Anchor CMS - Free and lightweight blogging system
Apple ARKit - A framework to create Augmented Reality experiences for iOS
Textpattern - Textpattern is an elegant content management system that is free, open source software.