Sites running Paid Memberships Pro use it to:
Manage professional organizations with thousands of members.
Get paid for e-learning and digital courseware.
Accept recurring payment for content, podcasts, video, and more.
Create private social communities for unique interest groups.
Develop robust directory or listings sites by topic or region.
Offer product subscriptions or members-only product discounts.
90,000+ active installs.
Recommended by businesses of all types.
I have been playing with other membership plugins but none of them were able to make me happy or work properly. Some didn’t offer much flexibility and upon trying Paid Memberships Pro I can now protect my sites’ content to non-subscribers. I use PMPro for all my payment sites.