Storyblok

Storyblok is also a web service, so you only need to register an account to create a project. It is more difficult to use than Contentful, but has more room for customization. In addition to the main entities, here it's possible to make auxiliary ones to use as components of the main entities. Storyblok allows grouping entities and content independently.

Also, this CMS has a unique feature. It can include your code on the frontend to see a preview of the content being created, which is important for content managers.

Of course, Storyblok has some flaws. It's not beginner-friendly, so a bit of learning is required to understand its interface. Then, it is only available in the paid version. Storyblok also has restrictions for entities, content, and files, but they are much wider than in Contentful.

Finally, Storyblok is a good CMS if you have fairly complex data structures in your project and want to fine-tune them.

Butter CMS

With ButterCMS, you can quickly create applications and websites that are driven by the CMS in any programming language. fantastic for dynamic sites, blogs, and more.

Your backend for content is ButterCMS. a headless CMS platform that is API-first and popular with developers and marketers. Butter makes buildings stronger.

The platform has white-labeling features that let businesses create unique blogs with their own themes, logos, content, fonts, and colors and embed them into already-existing websites.