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.

Paddle - The Paddle Revenue Delivery Platform for B2B SaaS companies powers growth across acquisition, renewals and expansion.

Recurly - Subscription billing and recurring billing management. Recurly offers enterprise-class subscription billing for thousands of companies worldwide.

PayHere - Run a services business or startup? Charge recurring and one-off payments with beautifully designed payment forms. Get up and running in less than 5 minutes!

ServiceBot - The new, open source way to run a business online. Subscription billing, Self-service customer portal, service lifecycle management?

Recurring Payments - No need to create invoices. No need to remind clients to pay