This plugin Connects WordPress Plugins and external applications seamlessly. It's a great way to save time and simplify the process of Automation.
Demo: https://bitapps.pro/bit-integrations/
PayPage is a payment gateways integration script built in PHP. It provides a facility to integrate payment gateways like PayPal, PayTM, Instamojo, Paystack, Stripe.
Demo: https://codecanyon.net/item/paypage-php-ready-to-use-payment-gateway-integrations/24695122