Butter CMS vs Sanity

ButterCMS is a headless CMS that provides a content API for blogs, pages, and structured content. It offers a WYSIWYG editor, content modeling, and SDKs for multiple programming languages.

Sanity is Headless CMS with a real-time collaborative editing studio and a flexible content lake for structured data.. It is available under a freemium model. This tool falls under the cms category.