Payment Processing & SaaS Billing

MA

Marqeta

4.4/5.01 verified review

Contact Sales

Enterprise-grade card issuing and payment processing platform to scale financial products.

• Developer-first infrastructure with modern REST APIs and comprehensive technical documentation.
• High-availability processing engine built for massive transaction volume and reliability.
• Real-time transaction authorization controls via webhook event streams.

ME

Memberstack

4.4/5.01 verified review

Freemium

Membership, user authentication, and Stripe payment platform for websites

• Direct integration with Webflow and any framework via JavaScript SDK
• Native management of recurring charges and webhooks through Stripe
• Flexible client-side content and route protection

CH

Checkout.com

4.4/5.01 verified review

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Global high-performance payments platform for enterprise and scaling businesses.

• Infrastructure focused on maximizing global payment acceptance rates
• Unified API for managing cross-border collections and payouts
• Advanced fraud mitigation tools and AI-driven performance optimization

SH

Shopify

4.4/5.01 verified review

Paid·$39/mo

Comprehensive all-in-one e-commerce and payment platform for businesses of all sizes.

• Scalable infrastructure with high availability for traffic surges
• Extensive ecosystem of third-party apps and extensions
• Proprietary integrated payment gateway with multiple providers

CL

Clara

4.4/5.01 verified review

Free

Financial operating system and spend management platform for Latin American companies.

• Local corporate card issuance in Mexico, Brazil, and Colombia.
• Advanced expense reporting automation and receipt reconciliation.
• Real-time spend analytics tailored for corporate finance teams.

QU

Quaderno

4.4/5.01 verified review

Paid·$29/mo

Automated tax compliance software for sales tax, VAT, and GST in digital platforms.

• Real-time monitoring of international tax thresholds and US economic nexus.
• API tax calculation engine with millisecond responses for checkout workflows.
• Complete automation of electronic invoices and Peppol mandates across jurisdictions.

RE

Recharge

4.4/5.01 verified review

Paid·$99/mo

Subscription commerce and recurring billing platform for ecommerce stores.

• Advanced automation for recurring billing cycles.
• Deep integration and market presence within Shopify ecosystems.
• Customer self-service portal to help reduce subscriber churn.

RA

Ramp

4.4/5.01 verified review

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Corporate spend management, physical and virtual cards, and automated accounts payable

• Advanced automation for expense matching and monthly financial close
• Instant issuance of virtual and physical corporate cards with strict spend controls
• Extensive library of native integrations with leading accounting and ERP software

CS

Churnkey SDK

4.4/5.01 verified review

Freemium·Open Source·MIT

Open-source React component for customer cancellation flows, surveys, and retention.

• Production-ready component integrated via an npm package.
• Fully free open-source tier requiring no prior platform registration.
• Supports configurable flows featuring surveys, feedback, and discount offers.

24stars on GitHub

TT

Ticket Tailor

4.4/5.01 verified review

Paid

Online ticketing platform with competitive pricing and zero long-term contracts.

• Flexible pricing model based on ticket volume.
• No long-term contracts or mandatory monthly fees.
• Built-in multi-currency and multilingual support.

GI

Givebutter

4.4/5.01 verified review

Freemium

All-in-one fundraising platform, marketing, and donor management for nonprofits.

• Generous free tier supported by voluntary donor tipping models.
• Built-in nonprofit donor CRM included without hidden base fees.
• Wide variety of native tools for events, auctions, and campaigns.

WI

Wise

4.4/5.01 verified review

Freemium

International account and cross-border money transfers with real mid-market exchange rates.

• Real exchange rates with no hidden markups
• Fast transfers to over 140 countries
• Comprehensive API for financial systems integration