Custom Field Suite is described as '(CFS) is a visual custom fields management plugin for WordPress. CFS includes over 12 field types, include text, date, wysiwyg, file upload, relationship, user, and loop (repeatable fields)'. There are five alternatives to Custom Field Suite for Self-Hosted solutions and Wordpress. The best alternative is Pods Framework, which is both free and Open Source. Other great apps like Custom Field Suite are Advanced Custom Fields (Freemium), Toolset Types (Paid), Carbon Fields (Free, Open Source) and CustomPress (Paid).
Advanced Custom Fields helps you create data in WordPress with the flexibility of a professional Content Management System. WordPress is designed for blogging, ACF extends it with powerful custom content and a UI to make it dead easy.