Best Payment Processing Software - Page 62

How Many Payment Processing Software Products Does G2 Track?

Total Products under this Category: 1,085

Category Stats (Nov 2026)

  • Average Rating: 4.36/5 (↓0.01 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: MoonClerk (+2.32%) - Among all products in this category, MoonClerk recorded the largest rating increase compared to last month

Last updated: November 01, 2026

How Does G2 Rank Payment Processing Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 38,400+ Authentic Reviews
  • 1,085+ 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, PayPal Checkout, Adyen Payments, Nickel, and Stripe Payments.

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=paypal-checkout&focus%5B%5D=adyen-payments&focus%5B%5D=nickel&focus%5B%5D=stripe-stripe-payments)

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®

Soldo

Soldo is the proactive spend management solution that frees progressive businesses to accomplish more. Soldo combines a spend management platform, company cards and a mobile app, giving employees controlled access to company money. Finance teams can set budgets and spending rules, track transactions in real time, and simplify expense management. Over 25,000 organisations across 31 countries use Soldo to end slow, messy, and inefficient spending, bringing financial agility and control over every expense. Soldo frees finance with a uniquely proactive approach to managing decentralised spending. By combining a powerful spend management platform, user-friendly app, and versatile payment methods, Soldo automates expense admin to eliminates the inefficiency in managing business spending. By proactively managing decentralised spend, organisations empower employees to spend when and where it's needed, keeping productivity high while avoiding month-end surprises.

Average Rating: 4.5/5.0

Total Reviews: 195

How Do G2 Users Rate Soldo?

  • Has the product been a good partner in doing business?: 9.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Soldo?

  • Seller: Soldo
  • Company Website:
  • Year Founded: 2014
  • HQ Location: London, England
  • LinkedIn® Page: www.linkedin.com
    405 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Director, Accountant
  • Top Industries: Non-Profit Organization Management, Accounting
  • Company Size: 46% Small, 43% Medium

What Do G2 Reviewers Say About Soldo?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the user-friendly platform of Soldo, making financial management streamlined and efficient.
  • Users commend Soldo's fast and efficient customer support, enhancing the overall experience and resolving issues promptly.
  • Users value the flexibility of virtual cards in Soldo, simplifying expense management and enhancing control over spending.
  • Users value the time-saving features of Soldo, appreciating streamlined expense management and reduced manual workload.
  • Users benefit from Soldo's user-friendly expense management, enjoying automation, real-time insights, and customizable spending controls.
Cons
  • Users face approval issues with Soldo, particularly regarding payment rejections and initial setup complications.
  • Users find Soldo's inadequate reporting requires manual reconciliation due to unreliable currency details on the wallet dashboard.
  • Users face geographical limitations with Soldo, as certain services and payment options aren't available in all regions.
  • Users are frustrated by the limited acceptance of Soldo, particularly with major services like Google and Meta.
  • Users find the manual entry requirement frustrating due to limited integration with other systems, complicating reconciliation efforts.

What Are Recent G2 Reviews of Soldo?

What Are G2 Users Discussing About Soldo?

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?

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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?

Spenmo

Spenmo is the go-to payments software for growing businesses. We are an end-to-end payables software that brings internal spend management, corporate cards, automated bill payments, approval workflows, and accounting reconciliation into an integrated view. Companies that use Spenmo save over 50 hours and $10,000 every month. Upon completing the Y-Combinator program in 2020, Spenmo has since grown to over 200 employees and raised over US$85M in venture capital from leading investors such as Y Combinator, Insight Partners, Addition, Salesforce, Global Founders' Capital and Alpha JWC.

Average Rating: 4.5/5.0

Total Reviews: 60

How Do G2 Users Rate Spenmo?

  • Has the product been a good partner in doing business?: 9.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Spenmo?

  • Seller: Spenmo
  • Year Founded: 2019
  • HQ Location: Singapore
  • LinkedIn® Page: www.linkedin.com
    11 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Education Management, Information Technology and Services
  • Company Size: 52% Small, 48% Medium

What Are Recent G2 Reviews of Spenmo?

What Are G2 Users Discussing About Spenmo?

Splitit

Splitit revolutionizes payment solutions by enabling card-linked installments without new loans or fees, leveraging consumers' existing credit. As the only embedded white-label omnichannel payments provider of its kind, Splitit empowers enterprise merchants to achieve higher conversion rates and increased transaction values without losing customers to third-party BNPL providers. Its innovative, consumer-friendly approach spans diverse sectors, including jewelry, dental care, and education. By future-proofing payments with a model that prioritizes consumer protection and merchant success, Splitit sets a new standard in the industry.

Average Rating: 4.1/5.0

Total Reviews: 18

How Do G2 Users Rate Splitit?

  • Has the product been a good partner in doing business?: 9.5/10 (Category avg: 8.8/10)

Who Is the Company Behind Splitit?

  • Seller: Splitit
  • Year Founded: 2012
  • HQ Location: Atlanta, US
  • LinkedIn® Page: www.linkedin.com
    96 employees on LinkedIn®
  • Ownership: ASX:SPT
  • Total Revenue (USD mm): $102

Who Uses This Product?

  • Top Industries: Consumer Goods
  • Company Size: 75% Small, 25% Medium

What Do G2 Reviewers Say About Splitit?

AI-generated summary from verified user reviews

Cons
  • Users warn against fraudulent activities by Splitit, leading to unauthorized charges and credit card issues.
  • Users warn about excessive late fees due to multiple authorizations, causing credit card limits to be quickly reached.
  • Users report significant payment issues with Splitit, often resulting in unexpected credit card authorizations and frustrations.

What Are Recent G2 Reviews of Splitit?

What Are G2 Users Discussing About Splitit?

SpotOn

SpotOn is one of the fastest-growing software and payment companies providing the technology and support that helps local businesses—and the people that run them—to succeed on their own terms. Known for its flexible, cloud-based technology and personalized support, SpotOn offers an end-to-end platform to accept payments, boost revenue, streamline operations, and create exceptional guest experiences. From seamless and efficient point-of-sale systems to integrated management solutions built for the fast-growing enterprise, SpotOn builds technology that "works the way you work," and backs it up with a 24/7 team of experts who make sure it always does—with fairness, flexibility, and a personal touch. SpotOn has 2,000 employees, including one of the strongest product and technology teams in the combined software & payments industry

Average Rating: 4.4/5.0

Total Reviews: 247

How Do G2 Users Rate SpotOn?

  • Has the product been a good partner in doing business?: 8.8/10 (Category avg: 8.8/10)

Who Is the Company Behind SpotOn?

  • Seller: SpotOn
  • Company Website:
  • Year Founded: 2005
  • HQ Location: San Francisco, US
  • LinkedIn® Page: www.linkedin.com
    2,680 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Owner, General Manager
  • Top Industries: Restaurants, Food & Beverages
  • Company Size: 63% Small, 34% Medium

What Do G2 Reviewers Say About SpotOn?

AI-generated summary from verified user reviews

Pros
  • Users value the helpful and accessible customer support from SpotOn, enhancing their overall experience and satisfaction.
  • Users find SpotOn to be very user-friendly, enabling smoother business operations and easier management of daily tasks.
  • Users commend SpotOn's staff professionalism, particularly praising the responsive and dedicated support from account managers.
  • Users value the exceptional customer service provided by SpotOn, enhancing their overall experience and satisfaction.
  • Users appreciate the simple and efficient UI of SpotOn, facilitating easy management and enhancing overall user experience.
Cons
  • Users report poor customer support, especially during weekends, which affects their overall experience with SpotOn.
  • Users find the difficult setup of SpotOn overwhelming, impacting the onboarding experience for new users.
  • Users find technical issues with SpotOn, including credit card processing failures and system glitches that disrupt operations.
  • Users face connectivity issues with SpotOn, including devices disconnecting and difficulties during internet outages.
  • Users experience slow performance with SpotOn, finding the mobile app and POS system cumbersome and frustrating at times.

What Are Recent G2 Reviews of SpotOn?

What Are G2 Users Discussing About SpotOn?

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®

Square Payment Links

Who Is the Company Behind Square Payment Links?

  • Seller: Afterpay
  • Year Founded: 2010
  • HQ Location: Melbourne, VIC
  • LinkedIn® Page: www.linkedin.com
    525 employees on LinkedIn®
  • Ownership: ASX: APT
  • Total Revenue (USD mm): $375

Square Virtual Terminal

Who Is the Company Behind Square Virtual Terminal?

  • Seller: Afterpay
  • Year Founded: 2010
  • HQ Location: Melbourne, VIC
  • LinkedIn® Page: www.linkedin.com
    525 employees on LinkedIn®
  • Ownership: ASX: APT
  • Total Revenue (USD mm): $375

Stablon

Stablon helps businesses create professional invoices, manage clients, automate recurring billing, share secure payment links, and trac

Who Is the Company Behind Stablon?

Stampli

Stampli delivers stress-free finance with Procure-to-Pay that works for you. The platform spans procurement, accounts payable, vendor management, payments, and Stampli Card, with Stampli AI embedded directly into ERP-integrated workflows. Stampli AI performs on average 87% of finance work across 2,700+ unique fields, with all suggested entries subject to human review and approval before posting to the ERP. With Stampli, finance teams control spend, move work faster, and turn operational data into smarter decisions. Founded in 2015, Stampli serves 1,800+ unique customers operating inside their ERP ecosystem across 2,800+ entities, with 400k+ invoices processed per week and $390B+ in cumulative spend processed. Stampli is backed by $148 million in funding from top investors including Blackstone, Insight Venture Partners, SignalFire, and Bloomberg Beta.

Average Rating: 4.6/5.0

Total Reviews: 2,112

How Do G2 Users Rate Stampli?

  • Has the product been a good partner in doing business?: 9.5/10 (Category avg: 8.8/10)

Who Is the Company Behind Stampli?

  • Seller: Stampli
  • Company Website:
  • Year Founded: 2015
  • HQ Location: Mountain View, California
  • LinkedIn® Page: www.linkedin.com
    310 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Controller, Staff Accountant
  • Top Industries: Accounting, Hospital & Health Care
  • Company Size: 61% Medium, 27% Small

What Do G2 Reviewers Say About Stampli?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of Stampli, finding it intuitive and efficient for managing AP processes.
  • Users value the efficient invoicing process of Stampli, praising its user-friendly features and seamless approval workflows.
  • Users appreciate the intuitive ease of use of Stampli, making invoice approval simple and user-friendly.
  • Users value the efficiency of Stampli, finding it easy to use and streamline the AP process effectively.
  • Users praise Stampli's excellent customer support, highlighting quick responses and friendly, helpful assistance from the support team.
Cons
  • Users experience invoice issues with scrolling difficulties and frustrating navigation affecting their efficiency in Stampli.
  • Users feel the missing features limit functionality, particularly in multi-location visibility and purchase order integration.
  • Users express concerns over approval issues, citing excessive approvers and lack of options for streamlined suggestions.
  • Users report technical issues with Stampli, including problems with purchase orders and sensitive clicking behaviors.
  • Users experience challenges with invoicing navigation, as scrolling and returning to previous invoices can be cumbersome.

What Are Recent G2 Reviews of Stampli?

What Are G2 Users Discussing About Stampli?

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?

Storekit collection & delivery

Digital menus, mobile order and pay for hospitality

Average Rating: 3.8/5.0

Total Reviews: 3

Who Is the Company Behind Storekit collection & delivery?

  • Seller: Storekit
  • Year Founded: 2016
  • HQ Location: London, England, United Kingdom
  • LinkedIn® Page: www.linkedin.com
    21 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Storekit collection & delivery?

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