I have developed many paid WordPress plugin which you can find here : http://wpweb.co.in/plugins/ I have extensive work experience with : Social network API(s) Payment Gateways Integration Woocommerce custom extension development Easy Digital Download custom extension development Wordpress theme customization We have very good experience in wordpress plugin development, we also have created some paid plugins which get sold out on codecanyon and we also provide support for that. we do plugin code addon comptibable so in case in future if you wanted to add more features we can do that by creating addon. you can check our code quality by dowloading above plugin and you get idea about how we do code with commenting and etc. At worldweb technology we specialize in a variety of different IT services like Mobile Application Development, Internet Marketing, Web Development, Software Development etc. So when you choose us you can get a complete package of different services and a combined knowledge of the veterans of the IT industry!