Best Payment Processing Software - Page 56

How Many Payment Processing Software Products Does G2 Track?

Total Products under this Category: 991

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
  • 25,400+ Authentic Reviews
  • 991+ 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, PayPal Checkout, BILL AP/AR, 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=paypal-checkout&focus%5B%5D=bill-ap-ar&focus%5B%5D=adyen-payments&focus%5B%5D=nickel&focus%5B%5D=stripe-stripe-payments)

Shieldpay

Shieldpay is market leader in providing secure digital payments, specialising in transactions that need more than just straight-through processing. Whether you're handling high-value, complex payments or thousands of transactions every day, we make sure you’re in complete control the whole way through.  With streamlined verification checks, the ability to hold funds until the conditions of the transaction are met then quickly and securely process payouts, Shieldpay can bring new value to your payment process. Already trusted by top UK law firms, leading businesses across a range of sectors and with over £4 billion in transactions processed.

Who Is the Company Behind Shieldpay?

Shiji Astral Payments

Shiji Astral Payments is the all-in-one, PCI DSS 4.0-compliant payment platform built for hotels. It supports credit cards, digital wallets, contactless, and multi-currency payments, seamlessly integrated with Shiji’s Daylight PMS, Infrasys POS, and Stellaris Digital. Trusted by over 10,000 hotels worldwide, including Marriott, Hyatt, and IHG, Astral Payments simplifies operations with centralized reconciliation, real-time automation, and 24/7 multilingual support. Tokenization and end-to-end encryption safeguard every transaction, while automatic cloud updates keep you secure without disrupting service. From boutique hotels to global chains, Astral Payments reduces complexity and delivers a smooth, scalable guest payment experience.

Who Is the Company Behind Shiji Astral Payments?

  • Seller: Shiji Group
  • Year Founded: 1998
  • HQ Location: Singapore, SG
  • LinkedIn® Page: www.linkedin.com
    1,459 employees on LinkedIn®
  • Ownership: SSE: 2153

Shoppy

Steam Game key with GTA V

Who Is the Company Behind Shoppy?

  • Seller: ICANN
  • Year Founded: 1998
  • HQ Location: Los Angeles, California, United States
  • LinkedIn® Page: www.linkedin.com
    773 employees on LinkedIn®

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How it works

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?

SimpleChex

SimpleChex is the simple way to write checks — for personal accounts, small businesses and the bookkeepers who serve them. There's nothing to install and almost nothing to learn: setup takes about two minutes, and writing a check is one screen. Add your bank account once, save your payees, and write a check in seconds. SimpleChex prints the full check — payee, amount in words, signature, memo and the E-13B MICR line specified by ANSI X9.13 — on plain white paper with a standard laser printer. Prefer to send it electronically? Email the check as a PDF; the recipient prints and deposits it, and can confirm it's genuine on a public verification page. Highlights: - Real MICR line on plain paper — no magnetic toner or special stock required - Email eChecks with a verification link for the recipient - Uploaded or typed signatures - Check history, batch printing, reprint and void, with a per-check audit log - QuickBooks Online sync (Solo and Firm): every printed check is recorded in the QuickBooks bank register with payee, amount, memo, number and category; memo edits and voids follow through - Print QuickBooks bill payments with a stub listing the bills paid - Write many checks at once by pasting a list from a spreadsheet - QuickBooks payroll users: upload the payroll PDF and SimpleChex adds the MICR line so paychecks print on blank paper - Guided setup: a checklist and a short tip on every page - Coming soon: ACH payments (early access at https://www.simplechex.com/whats-new) - Bookkeepers: one workspace for up to 10 client businesses, with team members limited to the clients you assign Pricing: Free for 1 business and 10 checks a month. Solo $5/month for unlimited checks. Firm $19/month for up to 10 businesses and a team. No credit card to start.

Who Is the Company Behind SimpleChex?

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?

SimplyPayMe

SimplyPayMe is the mobile payments solution for SMEs all over the world. We've taken all the card payment methods you're used to seeing in the market, such as face to face, over the phone and via emailed paylinks, and put them all into a simple app you can download to your smartphone. You no longer need a bulky card reader which can break and be forgotten, instead just use your smartphone for everything. SimplyPayMe also features a sophisticated online dashboard, where you will be able to see complete customer and job lists of everyone you've serviced or sold to. On top of that, we help your business go green and paperless by handling everything from our app such as invoicing, quotes and receipts. For larger businesses we also have team management capabilities, where you can quickly and easily invite members to take payments on your behalf, while assigning tasks and scheduling jobs with our simple drag and drop calendar. All while remaining in complete control of your team, deciding on who sees what and their level of access. SimplyPayMe lets you get back to doing what you love to do: working with customers. It’s used face to face, in the office, at home, even at foreign trade shows! There is no limit to the level of flexibility offered to small business owners via our payments infrastructure.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind SimplyPayMe?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of SimplyPayMe?

SiraPay

SiraPay is a privacy-first virtual card platform supporting 150M+ merchants worldwide with 150+ country coverage. It offers no forced KYC, affordable pricing, and card creation for global payments. Users can pay for subscriptions, ads, and online services easily with secure, fast, and flexible payment solutions designed for everyone Why SiraPay? SiraPay stands out by focusing on privacy-first, simple global payments with instant virtual card access. Unlike traditional platforms, it offers no forced KYC, affordable pricing, and fast onboarding. Designed for freelancers, digital entrepreneurs, and global internet users, SiraPay focuses on delivering a smooth onboarding experience and instant access to digital payment tools. It is built for the modern internet economy where speed, simplicity, and accessibility matter most. Key Features • Privacy-First Payment Experience • Fast & Simple Onboarding • Virtual Card Access. • Low-Cost Transactions • Global Payment Support • User-Friendly Dashboard SiraPay is built for the modern global user—freelancers, creators, and digital entrepreneurs—who need a simple, fast, and reliable way to manage online payments. Welcome to SiraPay — a smarter way to access global digital payments.

Who Is the Company Behind SiraPay?

  • Seller: SiraPay
  • Year Founded: 2025
  • HQ Location: London, GB
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

SiTef

Who Is the Company Behind SiTef?

  • Seller: Fiserv
  • Year Founded: 1984
  • HQ Location: Milwaukee, US
  • LinkedIn® Page: www.linkedin.com
    34,136 employees on LinkedIn®
  • Ownership: BMV:FISV
  • Total Revenue (USD mm): $14,852

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®

SmartDebit

SmartDebit is the UK’s leading Direct Debit service provider, specialising in payment processing on behalf of businesses, not-for-profits and the public sector since 1998. SmartDebit is a Bacs approved Bureau, scoring ‘Excellent’ ratings in the Bacs audit, and is ISO 27001:2013 certified. The company can help improve an organisation’s cash flow and control, saving valuable time and money through the automation of payment collections. By outsourcing to SmartDebit, a business will benefit from a fully managed Direct Debit service - project management, processing, security and contingency.

Average Rating: 5.0/5.0

Total Reviews: 2

How Do G2 Users Rate SmartDebit?

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

Who Is the Company Behind SmartDebit?

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of SmartDebit?

What Are G2 Users Discussing About SmartDebit?

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