Payments infrastructure for the internet.
Pricing
paid
Ease score
50 / 100
agent-friendliness
Auth
unknown
Completeness
0%
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Open-source billing infrastructure between your app and Stripe. Handles subscriptions, usage ledgers, limits, and overages via three simple API functions — no webhook handling required.
Email delivery and marketing platform with APIs.
SMS, voice, video, and email APIs for customer engagement.
Polar is a merchant of record and billing platform built specifically for developer tools, open-source projects, and SaaS. Supports subscriptions, one-time products, usage-based billing, and GitHub Sponsors integration. Polar handles taxes, invoicing, and payments globally. Features a built-in storefront, benefit grants (repo access, Discord roles, license keys), and a generous free tier with 5% platform fee.