Payments & Fintech APIs brand directory

Stripe is a comprehensive financial infrastructure platform offering developer-first APIs and no-code tools for payment processing, recurring billing, fraud prevention, tax automation, card issuing, treasury, global payouts, and stablecoin transactions—designed to serve businesses from early-stage startups to Fortune 100 enterprises.

Chargebee is an end-to-end subscription billing and revenue growth management platform that enables businesses to automate the full quote-to-cash workflow—from flexible pricing and CPQ through automated invoicing, global payment collection, GAAP-compliant revenue recognition, and AI-driven customer retention—without building custom billing infrastructure.

Adyen is a unified, enterprise-grade fintech platform that consolidates payment gateway, merchant acquiring, risk management, card issuing, and embedded financial products into a single stack. It serves global enterprises, omnichannel retailers, digital businesses, and SaaS platforms requiring payments and financial infrastructure at scale.

Orb is a developer-first revenue design platform that automates usage-based billing, pricing strategy execution, and financial operations for SaaS and AI companies. Built on a query-based architecture, it stores raw product usage events and queries them to compute billing metrics at any time, enabling flexible pricing iteration, retroactive corrections, and simulations—without engineering rework. The platform unifies metering, invoicing, revenue recognition, and CRM/ERP integrations into a single source of truth for finance, product, and engineering teams.

Recurly is an all-in-one subscription management platform that enables digital and ecommerce businesses to launch, manage, and grow recurring revenue. Its core suite covers subscription billing, payment orchestration, churn recovery, and revenue recognition, augmented by AI-driven insights (Recurly Compass), in-app engagement flows (Recurly Engage), and a native Shopify subscription commerce layer (Recurly Commerce).

Paddle is a Merchant of Record platform that provides SaaS and digital product companies with an all-in-one payments, billing, tax compliance, and subscription management infrastructure. By acting as the legal seller of record, Paddle absorbs the liability and operational complexity of global tax registration and remittance, fraud and chargebacks, and payment processing across 30+ currencies and 200+ markets—delivered through a unified API, localized checkout, and developer SDKs.

Braintree (PayPal Enterprise Payments) is a full-stack payment processing and gateway platform designed for developers and enterprise merchants. It provides APIs, mobile SDKs, hosted checkout UIs, Vault-based payment tokenization, recurring billing, premium fraud management, payment orchestration, and dispute tooling—backed by PayPal's global network and providing unified access to PayPal, Venmo, cards, digital wallets, ACH, and local payment methods in a single integration.

Lago is an open-source, API-first billing platform designed to handle complex, hybrid, and usage-based pricing models at scale. It combines a programmable metering engine, plan and subscription management, automated invoicing, entitlements, cash collection, and revenue analytics in a single system. It is payment-agnostic and can be deployed on Lago Cloud or self-hosted, giving companies full transparency and control over their billing infrastructure.

Square is an integrated payments and commerce platform offering REST APIs, SDKs, and first-party hardware for accepting in-person, online, and in-app payments. Its developer platform connects payment processing, order management, catalog and inventory, customer loyalty, gift cards, team scheduling, and banking into a unified ecosystem, with an App Marketplace enabling third-party integrations.

Plaid is a B2B financial data network and API platform that enables developers and enterprises to securely connect applications to users' bank accounts and financial data. Its modular product suite covers bank account connectivity, multi-rail payment initiation (ACH/RTP/FedNow), identity verification and KYC/AML compliance, fraud and risk prevention, transaction enrichment, investment and liability data, and FCRA-compliant credit underwriting—all accessed via REST APIs and pre-built UI components such as Plaid Link and Layer.

Moov is a full-stack US payment infrastructure platform for technical teams. It provides a unified API to accept card and bank payments, hold funds in Moov Wallets with a built-in ledger, disburse via ACH, RTP, or push-to-card, and issue virtual Visa debit cards—all under one integration and one legal agreement. The platform includes pre-built Drops UI components, hosted KYC/KYB onboarding, payment links, invoicing, Tap to Pay on mobile devices, and real-time data sync to customer data warehouses. Moov is directly connected to all major US payment networks and acts as its own licensed processor, issuer, and program manager, eliminating middleware dependencies.

Stigg is a monetization infrastructure platform providing a programmable entitlement and billing orchestration layer for SaaS and AI companies. It decouples feature access logic, usage limits, and commercial packaging from hardcoded application and billing system configurations, exposing these via developer-friendly APIs and SDKs. The platform enables engineering teams to implement pricing once and allows non-technical GTM teams to iterate on plans, run experiments, and manage customer entitlements through a no-code console, without further developer involvement.

Lemon Squeezy is an all-in-one Merchant of Record platform that enables SaaS companies, indie developers, and digital creators to sell software, subscriptions, digital downloads, and licensed products globally. It handles payments, global tax compliance, fraud prevention, subscription lifecycle management, license key delivery, and secure file distribution through both a no-code interface and a REST API. Acquired by Stripe in July 2024, it continues to operate independently while the founding team builds Stripe Managed Payments, Stripe's native MoR product.