ChompOn is a group-buying platform for publishers. It provides functionality for websites to integrate group-buying options and deals across a network of publishers. ChompOn also analyzes usersâ€™ social media for optimization. Their RESTful API exposes the platformâ€™s structure for developers to expand publishersâ€™ services on top of it, as well as for integration with other services. It can provide responses in JSON or XML.