ButterCMS is a CMS and blog engine that slides into any new or existing website in minutes. Butter gives marketing teams the CMS they've always dreamed of without creating a hassle for developers.
Contentful provides a web-based authoring interface that lets non-technical editors work with content after configuring a content model. Designers independently craft the interface for end-users, while the powerful APIs give developers a simpler way to load content into apps, websites, or even to build completely custom editing interfaces. Conntentful makes it easy to create and manage content in the cloud - and publish it everywhere: web, smartphones, tablets, signage, and whatever might come next.
Storyblok is a Headless Content Management System that provides developers with all the flexibility they need to build reliable and fast websites whilst giving content creators with no coding skills the ability to edit content independently of the developer. Storyblok helps your team to tell your story and manage content for every use-case: corporate websites, e-commerce, helpdesks, mobile apps, and screen displays. Thanks to the headless approach your content can not only be used for one website, which is the case if you use a monolithic CMS like WordPress.