When comparing ButterCMS vs Strapi, the Slant community recommends Strapi for most people. In the question“What are the best open source headless CMS's?” Strapi is ranked 1st while ButterCMS is ranked 13th. The most important reason people chose Strapi is:
Strapi comes with blueprints that let you create, read, update and delete your data. You also can paginate, sort and filter your results in a matter of seconds with simple but yet specific parameters.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Integrate with any language/framework
Pro Auto-generate REST APIs
Strapi comes with blueprints that let you create, read, update and delete your data. You also can paginate, sort and filter your results in a matter of seconds with simple but yet specific parameters.
Pro Users, groups and permissions
Manage user settings, login, registration, groups and permissions on the fly. Strapi delivers all those essential features out-of-the-box.
Pro Out-of-the-box administration panel
Easy way to manage your application. This panel allows you to add/edit/delete entries for your APIs, manage your users, groups and permissions. In the future, it will be such as WordPress-like administration panel dedicated to your application.
Cons
Con Not really open-source
Although API and SDK's are available on GitHub, the CMS source code is not.