Other Resources
Free Payment & Billing Integration
Discover 14+ free payment & billing integration tools and services for developers. All resources include generous free tiers or are fully open-source.
4curated resources
Stripe
Payment processing. No monthly fees, pay per transaction (2.9% + 30¢).
stripe.com
Paddle
Payment infrastructure for SaaS. Handles tax compliance.
www.paddle.com
LemonSqueezy
Payments, tax, and subscriptions for digital products.
www.lemonsqueezy.com
CoinMarketCap
Cryptocurrency market data API. Free: 10K call credits/month.
coinmarketcap.com