
PayKickstart 2.0 is an all-in-one revenue growth engine that handles billing, subscriptions, checkout, affiliate program, retention, fraud protection, and reporting. The platform accepts multiple payment methods including PayPal, bank transfers, cards, wallets, crypto, and 130+ currencies. It offers launching checkouts in minutes with over 40 pre-designed templates and powerful affiliate tools with tracking, promo tools, commissions, and Marketplace discovery. PayKickstart connects to more than 60 apps to automate workflows.
Cancellation flows, conversion incentives, and revenue recovery
ProsperStack is customer lifecycle optimization for subscription businesses focused on reducing churn. The platform provides embeddable cancellation flows, conversion incentives, customer winbacks, and automated payment recovery.
Subscription metrics, retention, and pricing optimization
Founded
ProfitWell is a subscription revenue automation company founded in 2012 that was acquired by Paddle for $200+ million. It provides subscription metrics and retention software, serving over 30,000 businesses in more than 100 countries.
Open-source billing platform for the intelligence era
Founded
Polar.sh is an open-source billing platform for developers launched in 2023. It positions itself as a Merchant of Record that handles payment processing, tax compliance, and digital product delivery for SaaS and developer tools.