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.

TypingDNA Authenticator - 2FA codes in your browser, secured by the way you type

UniPayGateway - Ultimate payment gateway software for merchants, ISOs and PSPs. Full range of payment gateway capabilities. Functionality rich open source payment system.

Stripe Billing - A set of tools for billing and subscriptions

Zuora - Zuora creates cloud-based software on a subscription basis that enables any company in any industry to successfully launch, manage, and transform into a subscription business.

Pabbly Subscriptions - Pabbly Subscription is a recurring billing & subscription management software.