# Best Payment Processing Software - Page 26

## How Many Payment Processing Software Products Does G2 Track?

**Total Products under this Category:** 557

### 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
- 21,900+ Authentic Reviews
- 557+ 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](https://www.g2.com/categories/payment-processing/grids.png?focus%5B%5D=1222&focus%5B%5D=15655&focus%5B%5D=59025&focus%5B%5D=6006&focus%5B%5D=4311&focus%5B%5D=97943&focus%5B%5D=1370291&focus%5B%5D=1191)

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.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1975&secure%5Bchosen_at%5D=2026-08-07T18%3A25%3A06Z&secure%5Bdisplayable_resource_id%5D=1975&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1975&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=84993&secure%5Bresource_id%5D=1975&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fpayment-processing%3FhsCtaTracking%3Da15f9a47-d2d3-4a09-bb8b-c434c5dbfc62%257C078495b8-b7a6-4d69-a4c5-7a7dc02ccf3d%26page%3D26&secure%5Btoken%5D=ff018983317b169befb5899408f52aea114feb8a1a3adf94cf9d4bca74a275aa&secure%5Burl%5D=https%3A%2F%2Ftry.sumup.com%2Fpos-om%2F%3Futm_source%3DG2%26utm_medium%3Dppc%26utm_campaign%3Dcta%26utm_content%3D&secure%5Burl_type%5D=custom_url)

### [IFX Payments](https://www.g2.com/products/ifx-payments/reviews)

IFX Payments helps businesses move money across borders with confidence. Our ibanq platform gives you access to Multi-Currency Accounts, so you can send and receive payments in up to 46 currencies. Pay staff and suppliers in more than 70 currencies, all from one place. Our foreign exchange team work alongside you, offering tailored support and guidance to help you manage currency risk and make the most of every transaction. With IFX Payments, expanding into new markets is straightforward and fully supported by real experts who put your business first.

#### Who Is the Company Behind IFX Payments?

- **Seller:** [IFX Payments](https://www.g2.com/sellers/ifx-payments)
- **Year Founded:** 2005
- **HQ Location:** London, England, United Kingdom
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=4abfd06193683c4fadaed56e627fb8baa7658bbb6fef93ee0f6b348ccc0e50b1&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fifxpayments&secure%5Burl_type%5D=linkedin_company_website)  
220 employees on LinkedIn®

### [IMS Payments](https://www.g2.com/products/ims-payments/reviews)

IMS Payments is a well-organized transaction processing system that can manage and control the entire range of payments, messaging and connectivity.

#### Who Is the Company Behind IMS Payments?

- **Seller:** [ECS Fin](https://www.g2.com/sellers/ecs-fin)
- **Year Founded:** 1999
- **HQ Location:** White Plains, New York, United States
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=10056011ccd799e1960ae7d70b01697a78c3ec1ce1ff17d758f4c7b3b040e04f&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fecsfin&secure%5Burl_type%5D=linkedin_company_website)  
285 employees on LinkedIn®

### [Incharge card](https://www.g2.com/products/incharge-card/reviews)

The Incharge platform offers merchants a fast and safe checkout solution. Customers can opt for scanning the CR-code during checkout and pay using their card or via direct SEPA transfer. Best of all, merchants receive their payment account immediately and without any fees.

#### Who Is the Company Behind Incharge card?

- **Seller:** [INCHARGE](https://www.g2.com/sellers/incharge)
- **Year Founded:** 2021
- **HQ Location:** Stockholm, SE
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=bdf052e4b36b57122395ed778c5f4156d3e584601d40b4690e264745b0c88c26&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Finchargecard%2F&secure%5Burl_type%5D=linkedin_company_website)  
11 employees on LinkedIn®

### [Index PPS](https://www.g2.com/products/index-pps/reviews)

Index PPS provides secure payment processing solutions for businesses of all sizes. From credit card processing and digital payments to merchant services and payment gateway integration, we help companies accept payments quickly, securely, and efficiently while ensuring compliance with industry security standards.

#### Who Is the Company Behind Index PPS?

- **Seller:** [Index PPS](https://www.g2.com/sellers/index-pps)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Infinicept](https://www.g2.com/products/infinicept/reviews)

Infinicept is a fast-growing, Denver-based fintech company that help B2B software companies become payment facilitators. Our industry-leading PayOps™ (payment operations) platform acts as your infrastructure and enables your business to get all the benefits of owning your own payments product without doing it all yourself. Our made-to-order underwriting, back office, and risk monitoring platform simplifies clients’ payment facilitation set-up process to minimize processing costs and focus on what they do best: running a successful business.

#### Who Is the Company Behind Infinicept?

- **Seller:** [Infinicept](https://www.g2.com/sellers/infinicept)
- **Year Founded:** 2015
- **HQ Location:** Denver, US
- **Twitter:** @infinicept  
222 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6141bf7dbc2f9ad8017b3bea030c9add2b2f98d4897f2aba71a6e2561ab442d8&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Finfinicept&secure%5Burl_type%5D=linkedin_company_website)  
37 employees on LinkedIn®

### [Ingo Payments](https://www.g2.com/products/ingo-payments/reviews)

Ingo Payments is on a mission to make money movement instant, digital and secure. Since 2001, Ingo has focused on a singular mission: to give people and businesses instant, digital and secure access to their money. Anytime. Anywhere. In any account they choose. Ingo Payments provides embedded API and iframe-supported payment solutions and delivers fully digital, cloud-based platforms that bridge the gap between legacy payments infrastructure and new payments technologies to deliver modern, bespoke payment experiences. You can count on us to tailor our platform and services to meet your needs.

#### Who Is the Company Behind Ingo Payments?

- **Seller:** [Ingo Payments](https://www.g2.com/sellers/ingo-payments)
- **Year Founded:** 2001
- **HQ Location:** Alpharetta, US
- **Twitter:** @IngoPayments  
3,030 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b2d407dfdd8d9a8bd849bc3fc4b5ea9ceca4246394662b8095a60431587dd220&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fingopayments&secure%5Burl_type%5D=linkedin_company_website)  
209 employees on LinkedIn®

### [Inloop](https://www.g2.com/products/inloop-inloop/reviews)

Our vision at InLoop is to improve lives by making the complex simple. With smart, open and dynamic technology and intelligence solutions, we power transactional ecosystems and take the friction out of the payment process across healthcare, disability, aged care, schools, government and corporate Australia. Across our brands Flexischools, LanternPay and Nuonic, our work ensures that the focus can be on the efficient provision of services and care.

#### Who Is the Company Behind Inloop?

- **Seller:** [Inloop](https://www.g2.com/sellers/inloop-f76ed47b-c4f9-41cc-a1eb-69d2d1ee7a3d)
- **Year Founded:** 2006
- **HQ Location:** Sydney, AU
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=175cf3e28756e369ed1de9d8e55133afcb33f9455005a5f1cf191d151f52d450&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Finloop%2F&secure%5Burl_type%5D=linkedin_company_website)  
13 employees on LinkedIn®

### [inovio](https://www.g2.com/products/inovio/reviews)

Inovio is the revolutionary new payments gateway offering seamless integration and global scalability. Its omni-channel platform adapts to any payment experience with industry innovations that bring simplicity to an often confusing process.

**Average Rating:** 1.5/5.0

**Total Reviews:** 1

#### How Do G2 Users Rate inovio?

- **Has the product been a good partner in doing business?:** 10.0/10 (Category avg: 8.7/10)

#### Who Is the Company Behind inovio?

- **Seller:** [North](https://www.g2.com/sellers/north-2026-06-16)
- **Year Founded:** 1992
- **HQ Location:** Troy, MI
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=2be113541fdaef03106679e0a0d323c154a7e1b8c463d675795ac074a66c8a73&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fnorthpayments&secure%5Burl_type%5D=linkedin_company_website)  
1,601 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Medium

#### What Are G2 Users Discussing About inovio?

- [What is inovio used for?](https://www.g2.com/discussions/what-is-inovio-used-for)

### [Intelligent Contacts Payment Portal](https://www.g2.com/products/intelligent-contacts-payment-portal/reviews)

Intelligent Contacts’ Intelligent Portal gives businesses the ability to present settlement offers or fixed installment plans OR allow consumers to virtually negotiate their own (according to your client-specific business rules). Dynamic account-level legal disclosures State-specific Mini Miranda disclosures Customizable consumer privacy policies pages Opt-in / opt-out consent tracking and management Mobile-First, Responsive Design Set your own parameters for settlement length, payment frequency, required down payment, and minimum amount accepted. Give consumers the ability to view, print, or download statements or other documents online. Reduce print & mailing costs by encouraging consumers to go paperless!

#### Who Is the Company Behind Intelligent Contacts Payment Portal?

- **Seller:** [Intelligent Contacts](https://www.g2.com/sellers/intelligent-contacts)
- **Year Founded:** 2010
- **HQ Location:** Plano, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b34b9ba1c066ae94d9a5a461f5fb6d2549e1476bbd75f4a1bfc175c3cefa9146&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fintelligent-contacts&secure%5Burl_type%5D=linkedin_company_website)  
24 employees on LinkedIn®

### [Interkassa](https://www.g2.com/products/interkassa/reviews)

Interkassa is an international payment aggregator. The service combines 70+ payment methods for accepting payments on websites, in-app or cashless offline. Interkassa serves over 4,000 businesses in Ukraine, CIS countries (except russia and belarus), Europe, Latin America, Africa and Asia. The platform offers a quick integration process via API or ready-made CMS plugin, flexible pricing plans and round-the-clock support.

#### Who Is the Company Behind Interkassa?

- **Seller:** [Interkassa](https://www.g2.com/sellers/interkassa)
- **Year Founded:** 2009
- **HQ Location:** Kyiv, Ukraine
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c451011a54c1037659d9e29ad959832078c314aa17e4582e9ae3170eb4323636&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Finterkassa&secure%5Burl_type%5D=linkedin_company_website)  
18 employees on LinkedIn®

### [Introwise](https://www.g2.com/products/introwise/reviews)

Introwise is a cloud-based platform that helps users manage their scheduling, payments and video calls. It offers an all-in-one tool for knowledge-based professionals to start and grow their business online. In just a few minutes you can create a booking page with a custom design, define your services and pricing, add your availability and connect calendars, setup payment processing using Stripe or PayPal. Once setup, simply share your Introwise link with your current or prospective clients to start getting free or paid bookings and have video calls directly on the platform - no extra downloads needed. Introwise combines scheduling with everything you need to grow your business: group sessions, packages of services, discount codes, local payment methods, custom domain support and much more.

#### Who Is the Company Behind Introwise?

- **Seller:** [Introwise](https://www.g2.com/sellers/introwise)
- **Year Founded:** 2019
- **HQ Location:** Seattle, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=21b86e39825d645695fa941bbe6d45175a79bb28b489c139b40da0b2c3a25fdb&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fintrowise&secure%5Burl_type%5D=linkedin_company_website)  
5 employees on LinkedIn®

### [iPaymer](https://www.g2.com/products/ipaymer/reviews)

iPaymer is a platform that helps you to provide convenient payment experice to anything you buy. iPaymer enables you to pay any type of card you own, without any hassle, but in the fastest possible way, and you can do it 24/7.

#### Who Is the Company Behind iPaymer?

- **Seller:** [Kore.co, Inc](https://www.g2.com/sellers/kore-co-inc)
- **Year Founded:** 2023
- **HQ Location:** 5502 Monterey Dr, Frisco, Texas 75034, US
- **Twitter:** @korecompany  
330 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=02d5c4561fa60900a7d17d68b1b613ac8afcd98af8cf0159fec8b12bf5426524&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fkorecoofficial%2F&secure%5Burl_type%5D=linkedin_company_website)  
13 employees on LinkedIn®

### [IPS System](https://www.g2.com/products/ips-system/reviews)

Syngistic is much more than a consulting company. We bring answers to business problems and use technology as the vehicle. We focus on making businesses more profitable by providing specific solutions that meet specific needs. These services include but are not limited to: Effective Manufacturing Environments, Database Applications and Reporting, Supply Chain Management, Activity Based Costing, Supplier Evaluation, Employee Performance Based Pay Incentives, Inventory Management, Business Intelligence, Data Warehousing, and Systems Integrations. Our clients experience smooth transitions and benefit from our understanding of their industry.

#### Who Is the Company Behind IPS System?

- **Seller:** [Syngistic](https://www.g2.com/sellers/syngistic)
- **HQ Location:** Greeley, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=2817510fd258e105f667bc60fb8db68227d6370a546e50d5ace8e151b4efb933&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsyngistic-llc&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [iQ Pro+](https://www.g2.com/products/iq-pro/reviews)

iQ Pro+ is the all-in-one payments platform designed to simplify how businesses get paid—anywhere, any way. From in-person and mobile payments to invoicing and integrated workflows, iQ Pro+ unifies every payment experience on one platform. Get real-time insights, streamline operations and access hands-on support—all backed by Basys’ payment expertise.

#### Who Is the Company Behind iQ Pro+?

- **Seller:** [Basys Processing](https://www.g2.com/sellers/basys-processing)
- **Company Website:** basyspro.com
- **Year Founded:** 2002
- **HQ Location:** Lenexa, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=a2316d8ef30d1adacaa35054b11b747f71eb9486691466d2c57052585df2055b&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fbasyspayments%2F&secure%5Burl_type%5D=linkedin_company_website)  
222 employees on LinkedIn®

### [Iron Rock Payments](https://www.g2.com/products/iron-rock-payments/reviews)

Credit Card Processing company

#### Who Is the Company Behind Iron Rock Payments?

- **Seller:** [Iron Rock Payments](https://www.g2.com/sellers/iron-rock-payments)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

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- [Next ›Next ›](/categories/payment-processing?hsCtaTracking=a15f9a47-d2d3-4a09-bb8b-c434c5dbfc62%7C078495b8-b7a6-4d69-a4c5-7a7dc02ccf3d&order=g2_score&page=27#product-list)

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Similar Categories

- [Payment Gateways](/categories/payment-gateways)
- [Embedded Payments](/categories/embedded-payments)
- [Failed Payment Recovery](/categories/failed-payment-recovery)

- [Installment Payment and Buy Now Pay Later (BNPL)](/categories/installment-payment-and-buy-now-pay-later-bnpl)
- [Payment Analytics](/categories/payment-analytics)
- [Payment Card Issuance](/categories/payment-card-issuance)

- [Payments Orchestration](/categories/payments-orchestration)

[Browse Payment Processing Themes](/categories/payment-processing/themes)

 ![Subhransu Sahu](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Subhransu Sahu")
SS

Researched and written by [Subhransu Sahu](https://research.g2.com/insights/author/subhransu-sahu)

Updated April 9, 2026

Payment processing software helps businesses securely handle and track business-to-business (B2B) payments from customers and to suppliers. It supports any organization that accepts non-cash payments by ensuring transactions are timely, accurate, and integrated with downstream financial systems.

### Core Capabilities of Payment Processing Software

To qualify for inclusion in the Payment Processing category, a product must:

- Collect customer payment information and relay it to a bank for approval or denial
- Transmit approval or denial of a transaction back to the customer or merchant
- Support multiple payment methods such as credit card, ACH, or wire transfer
- Define and track customizable payment rules, terms, and deadlines
- Identify errors such as late payments, overpayments, or failed transactions
- Integrate with ERP, accounting, or accounts receivable and accounts payable systems

### How Payment Processing Software Differs from Other Tools

Payment processing software focuses on secure transaction handling and status verification, working closely with related tools such as [payment gateways](https://www.g2.com/categories/payment-gateways), [accounting software](https://www.g2.com/categories/accounting), [AP automation software](https://www.g2.com/categories/ap-automation), [e-commerce platforms](https://www.g2.com/categories/e-commerce-platforms), and [retail POS systems](https://www.g2.com/categories/retail-pos). Its distinguishing value lies in managing payment execution and error identification across diverse payment methods.

### Insights from G2 on Payment Processing Software

Based on category trends on G2, the importance of reliable transaction approval, seamless integrations, and accurate detection of payment issues to maintain smooth financial operations.

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