- 2checkout
- Authorize.net
- Bank Of America (via Cybersource)
- BBS Netaxept
- Chase Paymentech Salem and Orbital (Certified)
- Checkout By Amazon
- CyberSource
- eProcesssingNetwork
- eWay (Australia)
- eSELECT Plus (US, Moneris)
- eSELECT Plus (Canada, Moneris)
- Google Checkout
- HSBC
- iDeposit
- Innovative Merchant Services (QuickBooks QBMS)
- ITransact
- JetPay
- Mercury
- Moneris eSELECT Plus (US)
- Moneris eSELECT Plus (Canada)
- MyECheck
- NetBilling
- OGONE Gateway (tier 2)
- OGONE Gateway (tier 3)
- Paymentech Salem and Orbital Certified (Now Chase Paymentech)
- PayFuse
- PayJunction
- PayLeap
- Payment Express
- PayPal Payments:
- PayPal (Standard)
- PayPal Express Checkout
- PayPal PayFlowPro
- PayPal Website Payments Pro
- Pinnacle Payments
- PlugNPay
- ProtX (U.K. Stores Only)
- QuickBooks Merchant Services (Innovative)
- QuickBooks Batch Mode, Non Real Time (Requires T-HUB Add-On from Atandra)
- Sage Pay Direct (formerly Protx)
- Sage Payment Systems
- SecureNetV4
- SkipJack
- Skrill (Moneybookers) PSP
- Transaction Central Gateway Supported
- USA ePay (certified)
- Verisign Payflo PRO (Now PayPal Payflow PRO)
- WorldPay Business
- Integrates with your own merchant account
- CC Avenue (For India)