WPayNow plugin enables payments to be taken without WooCommerce
Many WordPress owners need to take payments from customers, but actually do not need or want a shopping cart. For instance, if you provide services, often you will just want to invoice your customers and send them a link to pay.
With this plugin, you can enter your invoice on the administrator screen, and then email the invoice to the customer. The customer clicks on the the “Pay Now” button and is re-directed to a secure site to take payment. The payment is then recorded as being “Paid” on the console.