Polar

Polar is a complete payment infrastructure built for modern digital businesses. Key features include framework-specific adapters that enable integration in under a minute, particularly with Next.js for secure checkouts and customer portals. The platform offers sophisticated usage-based billing with built-in support for LLM token tracking and custom ingestion strategies.

The system handles all aspects of digital commerce including:

• Full tax compliance as Merchant of Record, managing VAT, GST, and sales tax globally
• Automated product benefits like license keys, digital downloads, and GitHub/Discord access
• Developer-friendly tools including CLI commands for quick setup and migration
• Flexible pricing models with support for subscriptions and one-time purchases
• Open source integrations with Raycast, Framer, and Zapier

With competitive pricing at 4% + 40¢ per transaction, Polar provides a modern alternative to traditional payment processors, focusing specifically on the needs of digital product creators and SaaS businesses.