Stripe Billing Customer Portal - Stripe-hosted page for customers to manage subscriptions
Trim - Manage and cancel your paid subscriptions
WAGSI - WAGSI is a recurring payments platform for Metamask users built on Polygon.
Bobby - Keep track of your subscriptions
Subscro - Subscription tracker. Get notified when a bill is due.
Recurpay - Recurpay is a subscription SaaS app for businesses that automates recurring billing.