Caldera Forms – More Than Contact Forms

Responsive form builder for contact forms, user registration and login forms, Mailchimp, PayPal Express and more.

Caldera Labs 200,000+ active installations Tested with 5.3 Updated 2 months ago

Paid Memberships Pro

Get Paid with Paid Memberships Pro: The most complete member management and membership subscriptions plugin for your WordPress site.

Stranger Studios 80,000+ active installations Tested with 5.2.4 Updated 6 hours ago


plenigo offers a full-featured e-commerce SaaS platform for digital products such as text, video, audio.

Plenigo Fewer than 10 active installations Tested with 5.0.6 Updated 8 months ago