Redux is a simple, truly extensible and fully responsive options framework for WordPress themes and plugins. It ships with an integrated demo.

CMB2 is a metabox, custom fields, and forms library for WordPress that will blow your mind.

Theme Options UI Builder for WordPress. A simple way to create & save Theme Options and Meta Boxes for free or premium themes.

The Options Framework Plugin makes it easy to include an options panel in any WordPress theme. It was built so developers can concentrate on making t …

Add ACF options page support for Polylang.

Export and import WordPress Options.

Create your child theme with options. Customize it many options.

Easily create custom variables that can be accessed globally in Wordpress and PHP. Retrieval of information is extremely fast, with no database calls.

WPC Product Options brings about the power of adjusting prices with highly customizable additional fields for products.

Adds more functionlity to the Divi theme.

An accordion field that lets you group multiple fields under accordion tabs. This makes a long ACF form break down with style.

For users who have a product with Redux Framework that a developer shipped with developer mode on (IE, annoying update notices and links to GitHub).

Supercharge your WordPress themes and plugins with powerful features that are easy to create.

Instead of installing a million plugins to disable features you don't want, why not use just ONE plugin?

Adds the ability to easily enter and display contact information.

Clean expired transients from your options table. The original and best!

Modal login form with redirect and styling options.

Create options screens that utilize Custom Field Suite

Adds subscription option icons for your RSS Feed; your FeedBurner Email Service; your Twitter Stream and your Facebook page. Totally user-defined.

Less But Better — Dieter Rams.