Peter J. Langley has been developing websites ever since he owned his first computer. He has been working professionally for many years as a lead web developer for various companies and industries as an employee & freelancer. As the influx of available technologies and capabilities in web browsers continues to increase, he has been fortunate enough to play a leading role in the software engineering of some sophisticated solutions, such as web-based GIS applications for Britain's mapping agency, Ordnance Survey. Peter is passionate about the Internet, computing, and software engineering principles. He enjoys working on engaging projects in vibrant atmospheres that quickly deliver value to consumers. He has been sharing how-to guides on his website, www.codechewing.com, for many years. This is a demonstration of his personal desire to encourage people to passionately unite knowledge and thrive from each other's experiences, interests, and perspectives. Antonio Santiago Perez is a computer science professional with more than 10 years of experience in designing and implementing systems. Since the beginning of his professional life, his work has been always related to the world of meteorology while working for different companies as an employee or a freelancer. He has experience in development of systems that collect, store, transform, analyze, and visualize data, and he is actively interested in any GIS-related technology with a preference for data visualization. His main field of experience is the Java ecosystem, and he has also actively worked with many related web technologies while looking to improve the client side of web applications. He is a firm believer in software engineering practices and is a follower of agile methodologies, involving customers as the main key to the project's success.