UtooChat is a tool for website owners that allows them to add an online chat support system to their websites. Users can sign up and copy code snippets onto their websites to install the service. I worked as a system architect and full stack developer in a team of 4 people. We implemented the presentation website and user logic with Laravel, MySQL, and Twitter Bootstrap. The chat application was created using AngularJS for the front-end, Node.js and Socket.IO for socket and message passing, Laravel for business logic, MongoDB and MySQL to save the chat history and access log, and Redis as a layer between PHP and Socket.IO for the messaging protocol.