Best Payment Processing Software - Page 34

How Many Payment Processing Software Products Does G2 Track?

Total Products under this Category: 558

Category Stats (Aug 2026)

  • Average Rating: 4.35/5 (↓0.03 vs Jul 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: QuickBooks Payments (+2.83%) - Among all products in this category, QuickBooks Payments recorded the largest rating increase compared to last month

Last updated: August 05, 2026

How Does G2 Rank Payment Processing Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 22,000+ Authentic Reviews
  • 558+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Payment Processing Software

G2 Grid® for Payment Processing Software plotting products by satisfaction and market presence

Highlighted products: PayPal Payments, Amazon Pay for Business, Venmo, BILL AP/AR, Adyen Payments, Stripe Payments, Nickel, and FreshBooks.

Underlying data: [Grid® JSON](https://www.g2.com/categories/payment-processing/grids.json?focus%5B%5D=paypal&focus%5B%5D=amazon-pay-for-business&focus%5B%5D=paypal-venmo&focus%5B%5D=bill-ap-ar&focus%5B%5D=adyen-payments&focus%5B%5D=stripe-stripe-payments&focus%5B%5D=nickel&focus%5B%5D=freshbooks)

Sponsored

SumUp

SumUp gives you everything you need to simplify your business operations. From tools to take payments, manage your money and run your business SumUp delivers tools for every type of business. SumUp enables all types of businesses to take payments, from contactless tap, chip, and card-not-present payments when merchants just need to key in card details. The SumUp Plus, Solo and Terminal card readers make it easy for you to take payments on the go. POS Lite & SumUp POS give small businesses the tools to run their business from inventory management, customer directories, loyalty, marketing and more. All with clear, transparent all-in-one pricing making it easy for you to know your bottom line. SumUp Connect is the best-in-class marketing and loyalty product. Giving small business owners the ability to drive more repeat business, increase average tickets, and build long-lasting relationships with their customers. Looking to switch to SumUp but not sure where to start? You can move from your current provider to SumUp in just a few easy steps.

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Shuttle, Global Payment Logistics

A payments marketplace and platform for software vendors and their merchants. Multi-tenant ecommerce platforms use Shuttle: - Booking platforms - CRM platforms - Ecommerce platforms - ERP platforms - Events and ticketing platforms - Form builders - Donation platforms - Insuretech platforms - LMS platforms Connect and monetize payments from the leading payment providers. Key components: - Merchant Setup - Merchant View - Checkout - Webhooks

Who Is the Company Behind Shuttle, Global Payment Logistics?

SimPayX

SimPayX gives a convenient and secure experience when you shop and pay at a retail outlet or even pay at unattended systems. Now make your shopping experience fun with easy transactions anywhere, anytime without having to stand in long queues.

Who Is the Company Behind SimPayX?

SimpliFi Go

What is SimpliFi Go? SimpliFi Go is the smartest way for businesses in the GCC to manage their expenses. It’s your all-in-one platform to save time, cut costs, and stay in control. Here’s what we offer: 1️⃣ Multi-Currency Wallets to manage payments in different currencies. 2️⃣ Multi-Currency Cards for hassle-free spending without extra fees. 3️⃣ Spend Management to track and control expenses easily. 4️⃣ Automation to simplify approvals and accounting. Simple, powerful, and built for businesses like yours.

Who Is the Company Behind SimpliFi Go?

  • Seller: SimpliFi
  • Year Founded: 2021
  • HQ Location: Dubai, AE
  • LinkedIn® Page: www.linkedin.com
    28 employees on LinkedIn®

Simply Easier Payments

Simply Easier Payments helps agents, brokers, carriers, MGAs, and premium finance companies save time and accelerate their billing and invoicing so they can get paid faster.

Who Is the Company Behind Simply Easier Payments?

SlimPay

At SlimPay, we are on a mission to help every merchant enroll customers and collect repeat payments to grow their business. SlimPay partners with medium and large merchants to deliver a frictionless payment experience across channels. Our payment solution helps merchants streamline acquisition, increase customer lifetime value and maximize revenue—through card, direct debit and open banking services. Launched in 2010, SlimPay has offices in Paris and Madrid, with 100 employees from 20+ nationalities. SlimPay serves customers across several industries, such as Deezer, SFR, EDF, Nespresso and Vattenfall. For more information, visit www.slimpay.com and follow us on Twitter or LinkedIn @SlimPay.

Who Is the Company Behind SlimPay?

  • Seller: SlimPay
  • Year Founded: 2010
  • HQ Location: Paris, FR
  • LinkedIn® Page: www.linkedin.com
    81 employees on LinkedIn®

SMART Hub

SMART Hub is a first-of-its-kind payment portal that digitizes and simplifies the way that businesses make, receive, and manage payments, and access payment insights. The portal provides a pre-built integration with any ERP, accounting software or system of record and includes a built-in onboarding module that guides businesses through the process of setting up the application. Integrating SMART Hub with an ERP, accounting software package or system of record streamlines the process of making and receiving payments, eliminates complexity through the automatic reconciliation of payments, and puts real-time payments insights and historical transaction details at a user’s fingertips.

Who Is the Company Behind SMART Hub?

  • Seller: Transcard
  • Year Founded: 2008
  • HQ Location: Chattanooga, Tennessee, United States
  • LinkedIn® Page: www.linkedin.com
    190 employees on LinkedIn®

SOLAR Acquiring

SOLAR Acquiring is a payment acceptance solution designed for banks and payment providers to process transactions across multiple channels out of the box. Whether you’re enabling in-store, online, or mobile payments, SOLAR Acquiring provides everything you need to manage the full acquiring lifecycle: secure transaction processing, seamless integration with POS and e-commerce platforms, real-time monitoring, and compliance with global payment standards.

Who Is the Company Behind SOLAR Acquiring?

  • Seller: Solanteq
  • Year Founded: 2015
  • HQ Location: Saint-Gilles, BE
  • LinkedIn® Page: www.linkedin.com
    46 employees on LinkedIn®

SOLAR Switch

The solution designed for banks and payment providers to connect, route, and manage transactions across multiple payment networks and processing systems. Whether you're expanding your payment infrastructure or modernizing existing processing capabilities, SOLAR Switch provides everything you need to ensure seamless transaction routing: intelligent message switching, protocol translation, third-party integrations, real-time processing, and reliable connectivity across the payment ecosystem.

Who Is the Company Behind SOLAR Switch?

  • Seller: Solanteq
  • Year Founded: 2015
  • HQ Location: Saint-Gilles, BE
  • LinkedIn® Page: www.linkedin.com
    46 employees on LinkedIn®

Solta Labs

Solta Labs is a New Zealand-based technology company specializing in developing innovative solutions for connected devices and applications. With a team of experts in IoT, smart devices, scalable mobile apps, and platforms, Solta Labs focuses on delivering world-class applications and digital products that empower companies to achieve success. Their collaborative development approach ensures close partnerships with clients, enabling the creation of reliable, market-centric products delivered on time and within budget. Key Features and Functionality: - Solta Pay: A cloud-based payment service designed to meet the evolving demands of the payment sector by providing specialized, agile, and unique services that transform payment experiences. - Solta Wallet: A secure, modular wallet that integrates various services and platforms, including loyalty programs, payments, credits, gifts, identity verification , age verification, and buy now pay later options. - Collaborative Delivery: Engages in close collaboration with clients through joint sprint teams or dedicated teams to deliver specific tasks within broader projects, ensuring tailored solutions. - Integration Services: Utilizes specialized skills and an integration services platform to rapidly develop and integrate API services, such as Point of Sale systems, payment devices, data services, and identity services. - Smart Transport: Leverages extensive experience in the mobility sector to develop software solutions and partner with global players in delivering new projects. Primary Value and Solutions: Solta Labs addresses the challenges faced by companies in the fintech, mobility, and construction sectors by providing innovative, technology-driven solutions that enhance user experiences and operational efficiency. Their expertise in IoT and smart devices enables clients to stay ahead in rapidly evolving markets. By offering secure, modular platforms like Solta Wallet and cloud-based services like Solta Pay, Solta Labs empowers businesses to integrate multiple services seamlessly, improving customer engagement and satisfaction. Their collaborative and integrative approach ensures that clients receive tailored solutions that meet their specific needs, driving success and growth.

Who Is the Company Behind Solta Labs?

Sonder

Sonder Payments is a membership-based payment processor. Rather than paying a percentage markup on every transaction, Sonder Payments members pay a flat membership fee. In addition to transparent pricing, Sonder Payments offers dedicated support representatives, lightning-fast deposits, a slew of hardware options, an online virtual terminal, hundreds of integrations, and more.

Who Is the Company Behind Sonder?

SPAYZ.io

SPAYZ.io is your gateway to seamless payments across Asia, Africa, and Europe. With over a decade of experience, we connect businesses to the future of finance - from Open Banking, Bank transfers and Mass Payouts to Wallets, Online Banking, QR Code Payments, Mobile Payments and Bank Cards. We support high-growth merchants with complex operational needs across 30+ countries with 50+ payment methods.

Who Is the Company Behind SPAYZ.io?

SquareFi

SquareFi is a global financial platform for modern businesses — bringing together payments, multi-currency accounts, corporate cards, and crypto tools in one place. We help companies simplify international finance: send and receive payments, manage fiat and digital assets, launch card programs, and scale globally — all through a single, flexible infrastructure. 💡 What you can do with SquareFi: • Open multi-currency IBAN accounts in 27+ currencies • Convert fiat to crypto and back with seamless On/Off-Ramp • Issue virtual and physical corporate cards — or launch a branded program • Access payments and card infrastructure via API or dashboard Whether you’re building a fintech product, managing global payouts, or looking to automate financial operations — SquareFi gives you the toolkit to grow without limits. Let’s simplify finance together.

Who Is the Company Behind SquareFi?

  • Seller: SquareFi
  • Year Founded: 2022
  • HQ Location: Sheridan, US
  • LinkedIn® Page: www.linkedin.com
    12 employees on LinkedIn®

Stella Source

Stella Source is the revenue engine for metals -- one platform for pricing, quoting, ordering, and payments -- built for the way metal is actually bought and sold. Most metal service centers and fabrication shops are leaving revenue on the table because their sales process is the bottleneck standing between them and revenue growth. Stella Source fixes that. Invite your customers to your online storefront where they can browse your catalog, see their specific pricing, and place stock or fabrication orders on their own time, without waiting on your team. Give your sales team the easiest path to an accurate quote no matter the sales channel, email, phone, fax, or online. Without ever leaving the inbox, your sales team can use AI-powered tools that turn any order request into a ready-to-send quote in minutes. And when the order closes, send digital payment links to convert to cash faster than ever. The result is a business that grows revenue from existing customers, reaches new digital-native buyers, and scales sales capacity. Your team spends less time managing the process and more time on the relationships that actually move the needle.

Who Is the Company Behind Stella Source?

Swikly

Swikly is an online deposit management software that streamlines securing deposits for rentals and reservations. The platform replaces traditional methods like checks, cash transfers, and credit card imprints with a digital solution. Core features include automated deposit requests, secure payment processing, and preservation of clients' credit card limits. For vacation rental, mobility and other rental professionals, Swikly secures deposits without blocking guests' funds, automates deposit workflows, and significantly reduces no-shows and damages. Swikly also connects seamlessly with a wide range of property management systems (PMS) and ERP tools. These integrations enable end-to-end automation of deposit management. For healthcare professionals, the software automates the collection of surgical fees and out-of-pocket costs after insurance reimbursement. Swikly includes personalized onboarding assistance and responsive customer support.

Who Is the Company Behind Swikly?

  • Seller: Swikly
  • Year Founded: 2016
  • HQ Location: LYON, FR
  • LinkedIn® Page: www.linkedin.com
    28 employees on LinkedIn®

Switchio

Switchio (by Monet+) is an enterprise-grade, in-person payment orchestration platform engineered specifically for modern retailers, global merchants, and self-service businesses. Offered as a secure SaaS solution, Switchio acts as a hardware-agnostic software bridge that connects your entire point-of-sale infrastructure directly to more than 40 certified acquirers and processing centers worldwide, completely eliminating single-vendor lock-in. Whether you deploy heavy-duty traditional Linux terminals, smart Android devices, or mobile-based SoftPOS applications, Switchio's modular Payment Application and Gateway deliver a unified, consistent customer checkout experience across your entire fleet. ■ Independent Multi-Acquirer Routing (40+ Pre-Integrated Acquirers) Gain total control over your financial architecture. Instantly connect to over 40 global and regional acquirers through a single integration. Dynamically route payments based on cost or location to bypass network failovers, slash processing fees, and maximize transaction approval rates. ■ 40+ Supported Hardware Options (Linux, Android & SoftPOS) Enjoy absolute freedom of choice. Switchio software runs natively across a diverse ecosystem of over 40 hardware models from various manufacturers, as well as native Android SoftPOS setups—letting you turn off-the-shelf mobile phones into secure payment terminals. ■ Centralized Terminal Management (TMS) Easily onboard, configure, and manage your entire international terminal fleet via a centralized, cloud-managed TMS portal or robust API integrations. ■ Integrated Value-Added Services (VAS) Unlock new revenue streams and boost consumer satisfaction by accepting local payment schemes, closed-loop fleet cards, meal vouchers, and mobile top-ups right on your existing POS devices—no hardware modifications required. ■ Enterprise-Grade Security & Resilience Built for high-availability (HA 24/7 mode), Switchio operates in a fully PCI DSS-compliant and EMV-certified environment featuring end-to-end encryption and advanced tokenisation to safeguard your retail network from end to end.

Who Is the Company Behind Switchio?

Subhransu Sahu
SS
Researched and written by Subhransu Sahu
Updated April 9, 2026