In this course, we will show you exciting examples of collaborative, interactive web applications that use various types of media including sound, images and big data. We will show you how to build sites that provide precisely this functionality, using Meteor. We will also provide fully working example application code that you can use for your own commercial web projects. The course also provides a range of advice and suggestions about how to develop bespoke web applications which match the requirements of clients, where clients are people who commission the product or people who use the product. We will take you through the development of the following applications: 1.\tA portfolio website with collaborative blogging functionality. 2.\tAn interactive, realtime, multi user music remixing system. 3.\tAn interactive, online graffiti wall where users can collaborate to create graphics. 4.\tAn interactive data visualisation platform for exploring and plotting big data in exciting ways. At the end of this course, you will be able to: \tImplement animated data visualisations and graphics using Advanced user interface libraries such as vis.js \tWork with external data sources \tCreate multi user, realtime, collaborative environments \tUse media APIs such as the Web Audio API Participation in or completion of this online course will not confer academic credit for University of London programmes.