Best Payment Processing Software - Page 16

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)

InvoiceCloud

InvoiceCloud is a leading provider of cloud-based electronic bill presentment and payment (EBPP) solutions, helping more than 3,250 utilities, government agencies, and insurance organizations modernize how they engage with customers. InvoiceCloud's SaaS platform drives higher digital payment, AutoPay, and paperless adoption rates—improving customer satisfaction while reducing costs, accelerating payments, and easing staff workloads. With a mission to make digital payments accessible for everyone, InvoiceCloud combines intuitive user experiences, omnichannel payment options, and AI-driven innovation to deliver secure, seamless billing at scale.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind InvoiceCloud?

  • Seller: InvoiceCloud
  • Year Founded: 2009
  • HQ Location: Boston, Massachusetts, United States
  • LinkedIn® Page: www.linkedin.com
    544 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of InvoiceCloud?

iwoca Pay

Get your invoices paid sooner by making it easier to pay with iwocaPay. Your customers choose to pay now or pay over 3 instalments, and you get paid up front every time.

Average Rating: 4.0/5.0

Total Reviews: 1

Who Is the Company Behind iwoca Pay?

  • Seller: iwoca
  • Year Founded: 2012
  • HQ Location: West End, GB
  • LinkedIn® Page: uk.linkedin.com
    614 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of iwoca Pay?

What Are G2 Users Discussing About iwoca Pay?

IXOPAY

IXOPAY is the performance layer powering global payments for the agentic era. Its configurable enterprise payments solution unifies payment orchestration, tokenization, and intelligence, providing merchants with a configurable infrastructure to optimize their payments performance. Built with enhanced payments intelligence and an AI agentic navigator, IXONav, merchants across the globe are empowered with the tools to make confident and precise decisions at every step of their payments journey. Today, IXOPAY connects merchants worldwide to more than 200 payment service providers, 300 payment methods, and a growing global network of innovative payment partners and solutions.

Average Rating: 4.6/5.0

Total Reviews: 17

How Do G2 Users Rate IXOPAY?

  • Has the product been a good partner in doing business?: 9.9/10 (Category avg: 8.8/10)

Who Is the Company Behind IXOPAY?

  • Seller: TokenEx
  • Year Founded: 2010
  • HQ Location: Edmond, Oklahoma
  • LinkedIn® Page: www.linkedin.com
    19 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 47% Small, 41% Medium

What Are Recent G2 Reviews of IXOPAY?

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Kill Bill

Kill Bill is an open source billing and payments platform for subscription and usage based businesses. The core is free and released under the Apache 2.0 license. It has been in production since 2010, has processed billions of dollars in revenue, and manages more than 100,000 subscriptions, for companies from growth stage startups to the Fortune 500. Fixed price, not a share of your revenue Kill Bill open source is free. Aviate costs 9,999 USD per month, billed annually. There is no percentage of revenue and no per transaction charge. Your billing cost is not tied to how fast you grow. You run it, you keep the data The platform runs in your own cloud account and your own database. Your billing data never leaves your infrastructure, which helps with data residency and audit requirements. The architecture is self hosted and auditable, with the technical controls needed for PCI compliance, including encryption at rest and in transit. The source code is public, so your team can review it before buying anything. You can install it yourself, deploy it from the AWS Marketplace, or have it operated for you on the Kill Bill Hosted Platform. A sandbox is available if you want to test it first. What the open source core covers Subscriptions: catalogs, plans, trials, add ons, upgrades, downgrades, and proration. Invoicing: recurring and one off invoices, credits, adjustments, and multiple currencies. Payments: gateway plugins maintained in the project, with payment retries and dunning rules included. Usage based and hybrid pricing: pre aggregated usage per subscription, with volume tiers next to fixed fees. Account hierarchies with parent and child invoicing, and multi tenancy to run several brands or divisions on one deployment. REST APIs and a plugin framework, so you add your own rules inside the platform instead of building systems around it. Kaui, the admin console used by finance, operations, support, and product teams. What Aviate adds Aviate is the enterprise version of Kill Bill, and it runs on the same deployment as the core. It adds dynamic catalog management through APIs, metering and usage billing, a wallet with prepaid credits, coupons and discounts, tax computation with connectors to Avalara AvaTax and Vertex, custom invoice sequencing, an admin workspace and health monitoring. Support is included in Aviate: Level 3 support through a dedicated Slack channel, directly with the engineers who build the platform, with a response within 1 business day for P1 issues. Kill Bill fits teams that need to own their billing logic: complex catalogs, usage based models, account hierarchies, several payment providers, or strict data residency rules. Finance and operations run the day to day in Kaui. Engineering keeps control of the model and the data.

Average Rating: 4.5/5.0

Total Reviews: 2

How Do G2 Users Rate Kill Bill?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 8.8/10)
  • Self Service Portal: 10.0/10 (Category avg: 8.6/10)

Who Is the Company Behind Kill Bill?

  • Seller: Kill Bill
  • Year Founded: 2010
  • HQ Location: San Francisco, California, United States
  • LinkedIn® Page: www.linkedin.com
    14 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Kill Bill?

Komfortkasse offline payments

Komfortkasse automates offline payments for online shops: bank transfer (prepayment), invoice, and cash on delivery. It fetches incoming payments from the merchant's bank account and matches them to open orders automatically – fault-tolerant, so an order is still recognised when the order number is missing or mistyped, the payer's name differs, a third party pays, or one transfer covers several orders. Transfers that belong to no order are kept out of the matching automatically. Matched orders are marked as paid in the shop system; nothing has to be checked or marked by hand. Komfortkasse backs this with a matching guarantee. Beyond matching, Komfortkasse covers the whole process after the payment is due: payment reminders and dunning by email and letter, automatic cancellation of unpaid orders, one-click refunds via SEPA direct debit mandate, and optional debt collection – without additional apps. Merchants connect their own bank account via open banking or use Komfortkasse's integrated accounts in Germany, Austria and Switzerland, with the right account chosen per billing country. One account serves several shops and shop systems: Shopify, Shopware, WooCommerce, PrestaShop, Magento and others, plus an API. Komfortkasse has been matching payments for merchants in the DACH region for more than ten years. Pricing is a percentage per matched payment with no base fee; a 30-day free trial is included.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate Komfortkasse offline payments?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Komfortkasse offline payments?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Komfortkasse offline payments?

LexisNexis Payment Solutions

LexisNexis Payment Solutions supports government agencies of all types that want to operate more efficiently, reduce their PCI scope, and give customers an easy payment processing experience as well. Government agencies depend on receipt of funds to serve their citizens, and LexisNexis Payment Solutions makes sure they get those funds as quickly, affordably and painlessly as possible.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind LexisNexis Payment Solutions?

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of LexisNexis Payment Solutions?

What Are G2 Users Discussing About LexisNexis Payment Solutions?

Libeo

Libeo enables SME business owners, financial directors and accountants across Europe to centralise and pay their supplier invoices in one click, without IBAN and without having to connect to their bank. The platform allows for end-to-end management of the purchasing cycle: - One single platform to manage and pay all your supplier invoices - Scans and sorts all of your invoices - Reduces manual processing errors and secures payments to prevent fraud - Digitization of your approval workflows - Simple and secure payments without using bank account details and without them having to go through their banking interface - Integration with several accounting tools Nearly 100,000 small businesses have joined Libeo to centralise and pay suppliers invoices like Eurosanté Private hospitals, Champagne Alain Edouard, Chateau Laguiole, Bodyguard app, Cali Sisters, Paname Collections or some franchises (Monoprix, Starbucks). Libeo has raised a total of £22M in funding since its creation in 2019. For more information [www.libeo.io](http://www.libeo.io) or contact us [hello@libeo.io](mailto:hello@libeo.io).

Average Rating: 4.5/5.0

Total Reviews: 1

How Do G2 Users Rate Libeo?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Libeo?

  • Seller: Libeo
  • Year Founded: 2018
  • HQ Location: Paris, FR
  • LinkedIn® Page: www.linkedin.com
    36 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of Libeo?

What Are G2 Users Discussing About Libeo?

Lumino

Lumino is a payment processing solution that facilitates transactions between a buyer and a seller, securely transferring funds from the buyer's account to the seller's account. It typically involves multiple steps, including authorization, authentication, and settlement, ensuring that payments are processed accurately and efficiently.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate Lumino?

  • Self Service Portal: 10.0/10 (Category avg: 8.6/10)
  • Level 3: 10.0/10 (Category avg: 7.8/10)
  • Accounting integration: 10.0/10 (Category avg: 8.4/10)

Who Is the Company Behind Lumino?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Lumino?

MagicBooking

MagicBooking is a UK-based, family-founded platform created in 2015 and now used by more than 2,000 schools, MATs, clubs, and childcare providers. Originally developed for Wandsworth Council, it has grown into a nationwide solution recognised for innovation and user experience, earning awards such as EdTechX K12 Winner and Indigo Design Award Winner. Still led by its founding team, MagicBooking continues to scale with a strong reputation for reliability and customer support. The platform unifies bookings, payments, registers, communication, and day-to-day admin into one cloud-based system. It supports wraparound care, extracurricular clubs, trips, activities, and multi-site operations with 24/7 online booking, automated registers, instant payments, instalment plans, reminders, MIS integration, Tax-Free Childcare automation, and real-time financial reporting. Staff manage availability, capacities, safeguarding details, and parent messaging from a single dashboard, while families use a mobile-friendly portal for bookings and account management. MagicBooking helps organisations save 4–5 hours of admin each day, improves cash flow through automated payments and restrictions, and provides seamless communication through built-in email, SMS, and notifications. By reducing manual work and supporting compliance with Ofsted and GDPR, the platform enables schools, MATs, and clubs to run more efficiently, scale confidently, and deliver a smoother, more reliable experience for families.

Average Rating: 4.8/5.0

Total Reviews: 5

How Do G2 Users Rate MagicBooking?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind MagicBooking?

Who Uses This Product?

  • Company Size: 100% Small

What Do G2 Reviewers Say About MagicBooking?

AI-generated summary from verified user reviews

Pros
  • Users praise the ease of use of MagicBooking, highlighting its intuitive interface and streamlined processes for bookings.
  • Users praise the easy setup of MagicBooking, which streamlines operations and enhances user experience significantly.
  • Users highlight the efficiency of MagicBooking, saving time and streamlining administration for better service delivery.
  • Users value the 24/7 access and updates provided by MagicBooking, enhancing service accessibility for families.
  • Users commend the high level of customer satisfaction with MagicBooking, appreciating responsive support and intuitive design.
Cons
  • Users report experiencing communication delays that occasionally hinder timely responses and support interactions.
  • Users often face delayed responses that slow down their booking experience with MagicBooking.
  • Users find the difficult setup of MagicBooking time-consuming, especially for smaller organizations with limited technical resources.
  • Users find the navigation difficult, making it challenging to effectively use the reporting software.
  • Users find the navigation challenging, making it difficult to use the reporting software effectively.

What Are Recent G2 Reviews of MagicBooking?

Maya

PayMaya is the only end-to-end digital payments ecosystem enabler in the Philippines, with platforms and services that cut across consumers, merchants, communities, and government.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate Maya?

  • Self Service Portal: 8.3/10 (Category avg: 8.6/10)

Who Is the Company Behind Maya?

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of Maya?

Merchant One

Merchant One is a payment processors, that services thousands of businesses across the country. Merchant One's Gateway product allows merchants to run sales via the web / mobile / API / Database, etc.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind Merchant One?

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of Merchant One?

What Are G2 Users Discussing About Merchant One?

Modulr

We're the digital platform removing the need to use your bank for bank accounts and payments. We automate your payment flows, embed payments within your platform, and enable you to build new payment products and services. All from one API.

Average Rating: 4.8/5.0

Total Reviews: 2

How Do G2 Users Rate Modulr?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Modulr?

  • Seller: Modulr
  • Year Founded: 2015
  • HQ Location: London, GB
  • LinkedIn® Page: www.linkedin.com
    524 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Medium, 100% Small

What Are Recent G2 Reviews of Modulr?

Monetra

For every payment application, from single-station point-of-sale to busy eCommerce sites and multi-site, multi-lane retail systems, Monetra has the features you need for fast, secure payment processing with the lowest transaction costs.

Average Rating: 3.0/5.0

Total Reviews: 1

Who Is the Company Behind Monetra?

Who Uses This Product?

  • Company Size: 100% Medium

What Are G2 Users Discussing About Monetra?

Nelnet Payment Services

PaymentSpring - the all-in-one, developer-driven payment gateway for anyone taking payments online, in-person or on-the-go. This powerful payment processing gateway is designed for software platforms, businesses and nonprofits ready to accept more. Take a closer look.

Average Rating: 4.0/5.0

Total Reviews: 1

Who Is the Company Behind Nelnet Payment Services?

  • Seller: Nelnet
  • Year Founded: 1996
  • HQ Location: Lincoln, NE
  • LinkedIn® Page: www.linkedin.com
    3,470 employees on LinkedIn®
  • Ownership: 2017

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Nelnet Payment Services?

Nomod

The payment links platform to sell anything, anywhere. Let your customers pay online or in-person using payment links, QR codes, Apple Pay, Google Pay, and process cards from all major card networks

Average Rating: 4.5/5.0

Total Reviews: 1

Who Is the Company Behind Nomod?

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

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Nomod?

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