WP Rocket - WP Rocket offers a caching plugin for Wordpress.
ClickBank - ClickBank is a secure online retail outlet for more than 50,000 digital products and 100,000 active affiliate marketers and are consistently ranked as one of the most highly-trafficked sites on the web.
Yoast - Yoast offers plugins to improve SEO and optimize web sites and blogs.
ShareASale - ShareASale has been in business for 20 years, exclusively as an Affiliate Marketing Network. Our technology receives accolades for speed, efficiency, and accuracy – and our reputation as a fair and honest business is well known within the industry.
Wordfence - Comprehensive security plugin for WordPress.
eBay Partner Network - description here