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Payment processors software

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Payment processors are businesses that process electronic payment transactions for merchants. Payment processors authorize, route, and settle credit and debit card payments between banks and merchants. They serve as intermediaries between the customer’s bank and the merchant’s account, providing increased security and efficiency to the payment process. Common types of payment processors include PayPal, Stripe, Square, and Authorize.net.

This chart displays the market share of the top 10 Payment processors software in 2025, highlighting the most popular tools used by online merchants.1. PayPal leads with a notable 28.15% share.2. In second place, Stripe at 12.22% share.3. Meanwhile, Klarna Checkout at 9.12% share.
  1. ChargeAfter11-20 installs
    ChargeAfter is a platform that connects retailers and lenders to offer consumers personalized Point of Sale Financing options at checkout from multiple lenders.
  2. Pace11-20 installs
    PacePay offers a BNPL (Buy now pay later) solution for merchants.
  3. Adyen11-20 installs
    Adyen allows businesses to accept ecommerce, mobile, and point-of-sale payments.
  4. Payflex11-20 installs
    Payflex offers an online payment gateway solution to South African merchants that allows shoppers to pay over 6 weeks, interest-free.
  5. Xpresslane11-20 installs
    Xpresslane is a checkout platform for ecommerce that focuses on increasing conversion during the checkout process.
  6. Heartland Payment Systems11-20 installs
    Heartland Payment Systems is a US-based payment processing and technology provider.
  7. T1 Pagos11-20 installs
    T1 Pagos is a payment processing platform.
  8. Catch1-10 installs
    Catch is a payment solution which allows merchants to use payments via bank payments instead of credit/debit cards.
  9. Divido1-10 installs
    Divio is a Buy now pay later solution. Divido provided whitelabel platform connects lenders, retailers and channel partners at the point of sale
  10. WayForPay1-10 installs
    WayForPay is a payment processing service provider based in Europe.
  11. Simpl1-10 installs
    Simpl is a fintech company that offers a cardless payment network with multiple solutions for merchants and consumers.
  12. Instamojo1-10 installs
    Instamojo is a Bangalore-based company that provides a platform for selling digital goods and collecting payment online.
  13. Amex Express Checkout1-10 installs
    Amex Express Checkout is a service that simplifies the checkout experience by auto-filling necessary cardholder payment data into merchant checkout fields.
  14. Wirecard1-10 installs
    Wirecard is a defunct German payment processor and financial services provider.
  15. Bitcoin1-10 installs
    Bitcoin is a decentralized digital currency, without a central bank or single administrator, that can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries.
  16. Liberapay1-10 installs
    Liberapay is a non-profit organisation subscription payment platform.
  17. Payplug1-10 installs
    Payplug is a French omnichannel payment solution dedicated to merchants.
  18. Partial.ly
    Partial.ly payment plan software lets businesses offer customizable payment plans to their customers.
  19. Fat Zebra
    Fat Zebra provides a process of accepting credit card payments online.
  20. Spotii
    Spotii is a tech-enabled payments platform where anyone can Shop Now and Pay Later with absolutely zero interest or cost.

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