Yellow is described as 'is for people who make websites. It's a flat-file content management system. Everything is made of files and folders. You can create web pages, blogs, wikis. There's support for Dropbox, Markdown and static content generation' and is an app in the Business & Commerce category. There are more than 25 alternatives to Yellow for a variety of platforms, including Self-Hosted solutions, Online / Web-based, Linux, Windows and Mac. The best alternative is WordPress, which is both free and Open Source. Other great apps like Yellow are Ghost (Free Personal, Open Source), Drupal (Freemium, Open Source), Grav (Free, Open Source) and Joomla (Free, Open Source).
Roadiz is a modern CMS based on a node system which can handle many types of services. Based on Symfony components and Doctrine ORM, it allows you to create your data schema from scratch and to organise your content as you want.
Nura24 is a free suite for businesses, communities, teams, collaboration or personal websites. Create a free and professional website in minutes. Nura24 is a free alternative to popular CMS or Business Software like Wordpress, Joomla, Drupal.
Create is a website builder that allows you to make your own website. Simple to use with beautiful templates. Use the tools to make mobile friendly web pages which are automatically responsive, and set up your own secure shop to sell your products and services.
The FlatSiteBuilder is a very easy to use content management system and content creation tool running as a desktop application on Linux. You are able to build web content which you can host on github pages for free or any other web space provider.