Contentful

One of the most popular and simple Headless CMS. It runs as a web service, so you have only to register an account to create a project. Contentful is very easy to use, stable and has a free version. In addition, there are lots of plugins and a package for working with this CMS.

But there are some shortcomings. First of all, it's a limitation of entities (models) and fields in the model. Also, like many Headless CMS services, the size of uploaded files is limited.

Despite the great popularity of Contentful, it could be a challenge to create even a small project due to limitations. Therefore, we recommend using it only for very simple projects.

Craft CMS

Pixel & Tonic launched Craft, a content management system, in 2013. Craft is a versatile, user-friendly CMS for building personalized digital experiences for the web and beyond. Craft is a PHP program that can connect to MySQL and PostgreSQL to save content.

This software program allows users to manage the creation and editing of their digital content. Craft, being a blank canvas, prioritizes content.

An easy-to-use control panel for content development and administrative operations. A fresh start to content modeling and front-end development that makes no assumptions about your material or how it should be consumed.