Polar

Polar is a payment infrastructure designed for modern SaaS and digital product businesses. It offers a comprehensive suite of tools to manage billing, subscriptions, and revenue, with a strong emphasis on developer experience and open-source principles.

Key features include:

• Usage-Based Billing: Robust event ingestion API with strategies like LLM, Delta Time, S3, Stream, and manual ingestion.
• Digital Products & SaaS Billing: Flexible pricing models and seamless payment processing for digital and subscription products.
• Benefits Engine: Automates access to features using license keys, credits, downloadables, GitHub repos, and Discord roles.
• Global Merchant of Record: Handles tax compliance, including sales tax, VAT, and GST.
• Framework Adapters: Integrates with Next.js, BetterAuth, and TypeScript, with 13 adapters available.
• Command Line Tools: polar-init for bootstrapping projects and polar-migrate for migrating from LemonSqueezy.

Polar targets developers and businesses looking for a modern, developer-friendly payment solution with features like automated benefits and global tax compliance.