Carbon Fields - Carbon Fields makes it easy for you to create custom fields for post types, taxonomies,
Charitable - A WordPress donation plugin that gives you full control over your fundraising experience.
Pods Framework - Plugin and framework for adding custom fields and custom content types to WordPress.
Revv Online Fundraising Platform - Revv is the fundraising platform that raises organizations more money.
WPforms - Drag & drop WordPress form builder
Give - A WordPress plugin for easily collecting donations