citypay

The WooCommerce plugin works by creating a token and redirecting to the 
Paylink form for cardholders to enter their card details directly into 
the CityPay secure web application. Once a payment has been completed it 
will attempt to connect via a webhook or postback to your website.

CityPay Paylink WooCommerce

CityPay Paylink WooCommerce adds payment processing support to WooCommerce using CityPay hosted forms.

Verifone e-commerce

This module adds a Sofinco Payment Gateway to your Installation of WooCommerce.
Sofinco is a Payment Services Provider in Europe, part of the Verifone Group.
plugin actions in wordpress:
this plugin offers an admin panel from the order section to the settings of Woocommerce. 
it adds payment information to the orders details and changes the status of orders (upon reception of an IPN, see below.) and adds payment means on the checkout page.
This plugin takes information from the order and creates a form containing the details of the payment to be made, including parameters configured in the admin panel of the module that identify the mechant.
The plugin checks for availability of the Sofinco platform, through a call to our servers. 
It then submits with javascript the form to the first available server.
the customer is then presented with a payment page, hosted on the Sofinco Platform (urls above).
The Sofinco Platform sends an Instant Payment Notification (IPN) to the server when the customer actually made the payment, indicating to the merchant the status of the payment.
the plugin generates a url that can catch the IPN call from Sofinco’s server, filtering incoming calls to the Sofinco IP address.
if payment is successfull, then the plugin validates the order though woocommerce.

Sofinco 3XCB

This plugin is a Sofinco 3x CB payment gateway for WooCommerce

CityPay Paylink WooCommerce vs Sofinco 3XCB