thirdweb - thirdweb is an ecosystem of SDKs, dev tools, and dashboards that help teams build and manage web3 apps. Deploy custom or pre-built contracts to ETH, MATIC, AVAX, & more.
Stripe Billing Customer Portal - Stripe-hosted page for customers to manage subscriptions
Fondu - Open source free ICO smart-contract builder
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
PAID Network - PAID network's SMART agreements will transform business
Recurpay - Recurpay is a subscription SaaS app for businesses that automates recurring billing.