Polar

**Stripe** is a financial technology company that provides online payment processing software and APIs for businesses of all sizes. Founded in 2010 by Irish brothers Patrick and John Collison, it lets companies accept payments, manage subscriptions and billing, handle tax compliance, prevent fraud, and access treasury and banking tools. Headquartered in South San Francisco and Dublin, it remains privately held.

A Better Auth plugin for integrating Polar payment and checkout functionality into an existing Better Auth application. It helps applications accept payments through Polar.

Dodo Payments is a merchant-of-record and subscription billing platform for digital products and software. It manages subscription lifecycles, payments, refunds, and disputes, and provides the resulting transaction and customer data for analytics and integrations.

Paddle is a commerce platform and payments provider for software and SaaS companies. Operated by Paddle, it provides payment processing, subscription billing, invoicing, tax and compliance handling, and related merchant services for software vendors.

Lemon Squeezy is a commerce platform for selling digital products and subscriptions, aimed primarily at software companies. It provides payment processing, subscription billing, licensing, tax/VAT handling and storefront/customer management.