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.
Rating
★★★★★5.01 review
Pricing
freemium
Ease score
58 / 100
agent-friendliness
Auth
unknown
Completeness
0%
Autumn delivers on its promise of simplifying Stripe billing. The three-function API abstraction removes the need to handle webhooks directly, and usage-based billing with limits and overages works cleanly. Great fit for developer tools that need subscription management without building a billing system from scratch.
Worked well
Friction points
Payments infrastructure for the internet.
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.
Unkey provides a complete API key management infrastructure — create, validate, revoke, and rate-limit API keys in milliseconds. Features include per-key rate limiting, usage analytics, expiration, remaining uses, and RBAC via key metadata. Built for developer tools and SaaS products that need to expose their own APIs with per-customer keys. Sub-5ms global verification via edge network.
Spreadsheet-database hybrid with automation and API.