Stax vs. Payrix

NMI Payments transforms payments from a backend function into a strategic growth driver. Designed for software companies. SaaS platforms, ISVs and ISO partners, it enables you to embed, brand, and monetize payments directly within your software—without becoming a PayFac or taking on compliance complexity. As a full-stack processor, acquirer, and technology partner, NMI manages underwriting, risk, and regulatory oversight behind the scenes. The result: faster go-to-market, stronger brand control, and new recurring revenue streams. With modular design and white-label flexibility, NMI adapts to your business model, whether you’re processing payments online, in-store, in-app, or unattended. Key Benefits Launch white-labeled payments in weeks, not months Control pricing, share in transaction revenue, and own the customer relationship Built-in compliance, risk, and fraud prevention tools Flexible integration via no-code, low-code, or full API access Developer-First Experience NMI’s developer environment bridges business and technical needs. Developers gain instant sandbox access, prebuilt SDKs, and intuitive APIs to test, integrate, and deploy quickly. Guided onboarding, dynamic sandbox simulations, and drop-in components make payments easier to build and maintain. Business teams can explore revenue opportunities through self-service tools and instant earnings insights. With NMI Payments, you can embed and scale payments without losing control—powering faster launches, stronger retention, and lasting growth

Quickly and effortlessly accept all types of payments with a focus on security and simplicity. Whether you're selling in-store or online, processing card payments is seamless and straightforward. The invoicing process can be efficiently managed, allowing for easy creation, sending, and tracking. If your customer isn't present, remote credit card transactions can be processed over the phone or through your computer. Square simplifies the experience of establishing and expanding your online store, enabling you to receive payments smoothly. With Square, accepting card payments is designed to be fast, secure, and hassle-free, ensuring there are no hidden fees or lengthy contracts involved. Trust in the reliability of rapid and secure payment processing to enhance your business operations. Additionally, you can focus on what you do best while leaving the complexities of payment handling to Square.

Framnex is a modular financial infrastructure platform that helps businesses turn existing client relationships into branded financial products and recurring revenue. The platform is designed for companies that already have trust, distribution, or payment volume and want to keep more banking, payments, FX, wallet, and card activity inside their own brand. Framnex supports white-label banking, embedded finance, automated payouts, wallet-as-a-service, card issuing, money transfers, payment gateways, mobile banking apps, crypto wallets, crypto cards, and digital asset workflows. It is built for FX brokers, company formation firms, banking consultants, payment providers, digital asset platforms, marketplaces, fintech startups, corporate service providers, and EMI or PSP consultants. Partners can launch branded accounts, payments, wallets, cards, FX flows, payouts, and cross-border transfer journeys without building the full infrastructure stack themselves. The platform includes core banking, ledger, payments, cards, wallets, compliance, connectors, and developer tools. Framnex helps partners start with a focused module, expand into a connected solution, or launch a full white-label financial platform. Its implementation process includes discovery, solution design, launch preparation, integration, testing, production rollout, and expansion planning. Compliance and operational readiness are treated as core capabilities, with support for KYC, AML, transaction monitoring, regulatory workflows, security, and controls. Framnex’s partner-first delivery model helps teams shape the commercial model, technical roadmap, compliance design, and launch process around real client demand. By combining financial infrastructure, branded product launch support, embedded finance, cards, wallets, payments, FX, compliance, digital asset capabilities, and guided implementation, Framnex helps businesses monetize client relationships with more control.

FISPAN transforms how banks and businesses connect by embedding secure banking services directly inside ERP and accounting systems. As a leader in embedded ERP banking, FISPAN enables seamless connectivity between Tier 1 banks (across the US, Canada, and UK) and NetSuite, Sage Intacct, Workday, Microsoft Dynamics 365 Business Central, QuickBooks, and Xero. Finance teams can automate accounts payable, accelerate accounts receivable, access near real-time bank feeds, initiate payments, manage multi-entity cash positions, and streamline reconciliation, all without ever leaving their ERP. Secure API integrations replace manual file uploads and outdated formatting processes, ensuring accurate, reliable transaction data flows directly into the ERP. The result: improved cash visibility, reduced operational risk, faster financial workflows, and a modern banking experience built directly inside your ERP or accounting software.

EBizCharge stands out as a premier provider of integrated payment solutions, enabling businesses to streamline electronic payment processing, bolster transaction security, and boost their profit margins. By equipping companies with the essential tools for faster, safer, and more cost-effective transactions, EBizCharge delivers a top-tier payment processing experience. Their applications adhere to PCI compliance and seamlessly integrate with leading ERP and accounting systems such as QuickBooks, various Sage ERP products, SAP Business One, Microsoft Dynamics, NetSuite, Epicor, and Acumatica, alongside major online shopping platforms like Magento, WooCommerce, and Volusion. This comprehensive integration ensures that businesses can operate efficiently while maintaining high standards of security and convenience.

PayKings is a specialized high-risk payment processing company that provides merchant account services, payment gateways, and transaction management solutions for businesses operating in challenging or heavily regulated industries. The company focuses on helping merchants secure payment processing approvals when traditional financial institutions and payment providers may decline applications due to industry risk classifications. Its automated underwriting system accelerates the approval process, allowing many businesses to begin accepting payments within as little as 24 hours. PayKings supports more than 50 industries, including CBD, firearms, dating services, adult businesses, online gaming, nutraceuticals, travel, cryptocurrency, debt settlement, and other high-risk sectors. The platform offers a comprehensive suite of payment solutions, including online credit card processing, ACH transactions, recurring billing, mobile payments, virtual terminals, point-of-sale systems, and mail order or telephone order processing. Fraud prevention and chargeback management tools help merchants minimize transaction risks while protecting revenue streams. Flexible integration options support major payment gateways, shopping carts, eCommerce platforms, content management systems, and custom development environments through APIs and SDKs. Businesses benefit from dedicated account management, onboarding assistance, and support teams familiar with the unique challenges associated with high-risk industries. Transparent pricing structures and scalable service options accommodate organizations ranging from startups to high-volume enterprises. With extensive experience in high-risk payment processing, PayKings helps businesses secure reliable payment acceptance capabilities while maintaining compliance, security, and operational efficiency.

Wallester is an Estonian-licensed financial institution and has been an official Visa partner since 2018, specialising in innovative digital financial solutions and card issuance. We empower companies across the European Economic Area (EEA) and the UK to streamline payments, launch branded cards, and scale efficiently. What we do: White-Label Solution with Embedded Finance Our solution enables businesses to integrate financial services directly into their platforms—a concept known as embedded finance. White-Label allows companies to launch branded payment cards tailored to their specific needs, enhancing customer experiences and opening new revenue streams. We ensure a swift time-to-market with simplified integration and dedicated support from our implementation team. Wallester Business: Corporate Expense Management It is designed to modernise corporate expense management. Wallester Business provides companies with instant access to virtual and physical Visa cards, streamlining financial processes through a modern app and comprehensive portal. Features include expense tracking, budget analytics, and seamless integration with accounting systems to enhance financial oversight and efficiency. Discover how Wallester can transform your financial operations and drive your business forward. Learn more and follow us on LinkedIn, Instagram (@wallester_com) or Facebook (@Wallester).

Square POS is an easy-to-use point-of-sale solution that offers a comprehensive array of features for managing various retail operations. Users can efficiently track inventory and sales, process payments online, and issue digital receipts. This versatile system is compatible with both Android and iOS devices. Notably, Square POS can operate offline by saving transaction data locally, automatically syncing with the cloud once an Internet connection is reestablished. Users can keep track of essential details like product names, pricing, and quantities with ease. Additionally, it includes functionalities such as barcode scanning, discount applications, credit card processing, gift card management, and the ability to handle refunds, making it a valuable tool for businesses of all sizes. With its user-friendly interface and robust capabilities, Square POS is designed to enhance the overall customer experience while streamlining operations.

Melio serves as a streamlined accounts payable solution aimed at enhancing bill payment processes, optimizing operational workflows, and boosting cash flow management for businesses of all sizes. To get started, try all of Melio's features free for 30 days! Melio’s platform enables users to make payments to vendors via online bank transfers or credit and debit cards, even when those vendors only accept checks, which not only helps in managing cash flow but also allows users to earn rewards. Melio integrates seamlessly with accounting software such as QuickBooks and Xero, ensuring that your financial records remain current. With Melio, you’ll get to streamline your day-to-day work. Either input vendor information or bill details manually, upload documents, or take a photo of the invoice for quick processing—it’s incredibly user-friendly. Payments can be scheduled in alignment with your cash flow strategy, and Melio will make those payments happen. International vendors? Our platform facilitates payments to global vendors in USD or the local currency, ensuring smooth transactions for various services and products. This comprehensive approach makes managing accounts payable more efficient and less stressful than ever before. Finally, no matter where your business takes you, Melio can follow—just be sure to download the mobile app, available on iOS and Android, to manage your business payments on the go.

Regpack is a widely utilized online platform for onboarding, registration, and payment processing, serving countless organizations across the globe. The software is designed to streamline various business operations by automating the onboarding experience, gathering essential client data, and facilitating automatic billing for services rendered. Whether it's for event management, client invoicing, trip or camp organization, or providing both in-person and virtual courses, Regpack simplifies the complexities of registration and payment through its advanced technology and extensive feature set. Among its standout functionalities are recurring billing options, flexible payment plans, automated payment collection methods, a customizable form builder, integrated email communication tools, and dynamic reporting capabilities, all aimed at enhancing user experience and operational efficiency. Additionally, Regpack's user-friendly interface ensures that organizations can easily navigate the system, further improving the overall onboarding and registration experience.