Although the WordPress development community has already produced several post meta frameworks, ButterBean was created for a very specific use case: custom post types with lots of custom meta.
“It’s designed specifically for situations where you have a lot of metadata attached to a post and need to present the fields in a usable manner without the user having to scroll all over the page to find the field they need,” Tadlock said. If you just need a handful of fields, ButterBean is not the solution.
“I’m fully aware of existing solutions like CMB2 and ACF,” Tadlock said on the framework’s description page. “I’m sure those are useful for some folks and will definitely have more features than ButterBean ever will. I just want something simple that I can drop into my own plugins.”
ButterBean is available as a standalone plugin but can also be dropped inside a plugin. Developers who want to test the beta and offer feedback can find basic documentation on the project’s homepage. The framework’s code is available on GitHub along with an example plugin.