Polar

Payments Open source

An open-source platform for selling software, subscriptions, and digital products as a merchant of record.

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About

What is Polar?

Polar is an open-source monetization platform and merchant of record designed primarily for software businesses and developers. It provides checkout, subscriptions, product management, customer billing, tax handling, and developer APIs in a unified system. By acting as merchant of record, Polar can handle much of the payment and tax complexity that software creators would otherwise need to manage themselves.

Pros & Cons

Pros

  • Open-source codebase with a strong developer focus
  • Merchant of record model simplifies global tax handling
  • Supports subscriptions and digital products
  • Modern APIs and developer tooling
  • Useful for small SaaS businesses selling internationally
  • Reduces payment compliance and billing infrastructure work

Cons

  • Younger platform than Stripe or Paddle
  • Primarily focused on software and digital products
  • Merchant of record fees can be higher than direct payment processing
  • Smaller third-party integration ecosystem

Use Cases

Selling SaaS subscriptions Monetizing developer tools and APIs Selling downloadable software Handling international tax for digital products Adding billing to open-source commercial products
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