Paddle is best known for its Merchant of Record approach to SaaS payments—handling checkout, subscriptions, and much of the tax/compliance overhead so teams can ship faster. The alternatives span very different philosophies: Stripe is the “default” developer platform if you want maximum control and ecosystem support as your own merchant, FastSpring leans into sales-led motions with interactive quotes, and Polar offers an indie-friendly, open-source-leaning MoR experience that aims to be simpler and cheaper. If you’re more focused on building a configurable billing system that can sit on top of multiple gateways, Chargebee plays that role, while RevenueCat is the go-to when the real problem is iOS/Android subscriptions and entitlements rather than web checkout.
In comparing options, we focused on total cost and fee predictability, onboarding and verification friction, developer experience (docs, APIs, webhooks, testing), and how much tax/compliance burden each product removes. We also weighed how well each platform supports your go-to-market motion (self-serve vs sales-assisted), flexibility for custom billing models (usage/credits), and the operational realities of support quality and reliability at scale.