Skill: Redux Framework
Redux is a simple, truly extensible and fully responsive options framework for WordPress themes and plugins. Built on the WordPress Settings API, Redux supports a multitude of field types as well as: custom error handling, custom fields & validation types, and import/export functionality. Redux is designed to simplify the development cycle by providing a streamlined, extensible framework for developers to build on. Through a simple, well-documented config file, third-party developers can build out an options panel limited only by their own imagination in a fraction of the time it would take to build from the ground up!