If you know WordPress, you certainly know CMB2. CMB2 is a developer’s toolkit for building metaboxes, custom fields, and forms for WordPress. It’s a thriving plugin, with over 100K active installs and a five star rating on WordPress.org and over 1500 stars on Github. CMB2 also happens to be flexible enough to be bundled in other projects (plugins/themes), and those installation numbers are unaccounted for. If you account for the plugins and themes which bundle CMB2, this number is truly astounding. After a long history of many contributors and iterations, three WordPress web development companies, Human Made, Zao, and WebDevStudios, are coming together to work on CMB2 and create its own Github organization.
Before we get into the details of that, though, let’s talk a little bit about where CMB2 came from and why we’re so excited about this development.
A brief WordPress plugin history
Jared Atkinson, Bill Erickson, and Andrew Norcross built Custom Metaboxes and Fields for WordPress. Our own JT took over from Jared a few years back. After working on it for awhile at WebDevStudios, WDS requested taking over the plugin. Version 1.0.0 was released not long after
Source: https://managewp.org/articles/14789/cmb2-grows-where-human-made-zao-and-webdevstudios-meet-zao-is-wordpress-web-development
Willie Chiu's Blog 