Stacks vs. Shift4

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.

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

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.

RetailEdge is an intuitive and comprehensive point of sale (POS) and inventory management software tailored for retail enterprises, developed by High Meadow Business Solutions. This platform encompasses multi-location capabilities, seamless credit card processing, website integration, and mobile POS functionality, alongside gift card management features. It also supports secure mobile payment options like Apple Pay and EMV, while integrating with various e-commerce platforms for streamlined order processing, price adjustments, and gift card management tasks. What sets us apart? 1. A one-time payment for the software eliminates ongoing fees. 2. The hybrid software architecture keeps all data locally stored, ensuring quick real-time access even during internet outages or slow connections. 3. It includes a complimentary hour of training with real experts, aimed at organizing your inventory effectively and guiding you through the myriad of robust tools available to enhance your business growth. 4. Optional ongoing support and updates are tailored to meet your business requirements affordably. 5. Our integrated credit card processing is equipped with the latest features, designed to secure the lowest transaction fees, enabling you to maximize your savings.

Odoo is a highly customizable and open-source software solution that features a wide array of professionally crafted business applications. With its user-friendly database, Odoo addresses various business requirements, encompassing areas such as CRM, Sales, Projects, Manufacturing, Inventory, and Accounting. This versatile software is suitable for businesses of all sizes and budgets, making it an ideal choice for diverse company needs. The cohesive design of Odoo enhances operational efficiency and helps businesses save valuable time. Each module is designed to work harmoniously, providing a fluid experience as users navigate from one application to another. Automation capabilities allow users to streamline numerous tasks that would typically require manual entry across various systems. Odoo fosters collaboration among team members by consolidating all critical business functions onto a single platform, which ultimately enhances productivity and organization within the company. Furthermore, its adaptability ensures that businesses can continually evolve and tailor the system to their changing requirements.

Gr4vy empowers businesses to grow and launch new services and opportunities without the burden of extra costs, resources, or development time. With our cloud-based system, managing payment methods, services, and transactions becomes streamlined and centralized, significantly lowering the chances of single points of failure and vulnerabilities associated with shared infrastructure. By providing a wide range of options, from local payment methods to buy-now-pay-later solutions, Gr4vy enriches the checkout experience for customers, ensuring they have greater flexibility with just a few clicks. Our no-code tools make it incredibly easy to add, test, and deploy new payment providers in just minutes, negating the need for lengthy development processes. In using Gr4vy, businesses incur costs solely for the services they actively use, which simplifies both our platform and pricing structures. There are no cumbersome flat rates or per-transaction fees; rather, Gr4vy scales alongside your business, offering an ever-expanding selection of payment options, services, and providers as your needs change, ensuring you are always ready to tackle future challenges. This dedication to flexibility and growth allows you to concentrate on what truly matters—advancing your business and achieving its goals. Ultimately, Gr4vy not only enhances operational efficiency but also positions your business for long-term success in an evolving market.

As a business proudly owned by veterans and employing over 70% veterans, we are led by former Navy SEALS and honor our commitment to service as an Official Partner of the Navy SEAL Foundation and an Executive Sponsor of the SEAL Legacy Foundation. Trident 1 stands out as a leading point of sale solution tailored for gun retailers, providing essential tools for managing retail operations, processing payments, and fostering customer relationships. Recognized as the top provider of the first comprehensive FFL software specifically designed for the firearms retail sector, Trident 1 integrates all necessary systems into one streamlined solution, ultimately saving you both time and money. By simplifying your operations, Trident 1 allows you to concentrate on meeting your customers' needs effectively. Accessible from any device and location, this cloud-based software offers flexibility that modern retailers require. Our expertise spans retail sales, range management, compliance, industry-leading integrations, secure payment processing, and exceptional customer service, all delivered from the United States. In our dedication to excellence, we continuously seek to enhance the user experience and adapt to industry changes.

Revaly is built to solve one of the most costly and overlooked problems in subscription commerce: legitimate payments failing for preventable reasons. Its end-to-end Payment Performance Management platform leverages machine learning, issuer intelligence, and ecosystem data to elevate approval rates starting from the very first transaction attempt. The system automatically detects issues such as mistyped card numbers, routing mismatches, and metadata errors before a customer ever checks out. When payments do fail, Revaly uses a sophisticated retry engine that studies customer behavior, card network patterns, and historical success windows to recover revenue without damaging relationships. Businesses across industries report dramatic improvements—from 34% to over 50% increases in recovered payments—demonstrating the compound value of consistent, optimized approvals. Revaly’s integration ecosystem makes adoption frictionless, connecting seamlessly with CRMs, billing systems, payment gateways, and processors already in use. The platform not only protects revenue but stabilizes growth by reducing churn that comes from unintentional payment failures. Leadership teams gain visibility into payment performance metrics that go far beyond authorization rates, revealing hidden revenue opportunities and operational inefficiencies. As a result, companies can build smarter billing strategies and deliver a more reliable experience for customers. Revaly becomes a trusted partner in improving profitability, ensuring that when a customer says “yes,” the payment system does too.

KORONA POS stands out as an innovative point of sale solution tailored for retailers, event organizers, quick-service eateries, and cafes. Its subscription model includes seamless updates, around-the-clock customer service, and no additional fees or hidden charges. With KORONA POS, businesses can optimize their workflows, boost productivity, and gain valuable insights into their operations. This system is recognized as the fastest-growing POS platform in the United States, boasting an array of features such as comprehensive reporting, inventory tracking, product performance metrics, customer loyalty programs, promotional tools, and staff management capabilities. For those interested in learning more, scheduling a demo or initiating a trial is easy and comes with no obligations. You will receive personalized assistance from a dedicated account manager who will walk you through each essential feature necessary for your business's growth and success. This hands-on approach ensures you maximize the benefits of the software from day one.