WooCommerce Moneris Gateway extension
The Moneris extension allows you to keep the customer on your site for the checkout process, allowing you greater control over the checkout experience so that you can test and implement the most effective experience for your store. An SSL certificate is required for PCI compliance due to the direct checkout to ensure that your customers’ credit card information is secure. .
The extension is provided by Skyverge and is $79 to $199