Real time web app - The future of web development

Web app had heavily evolved from times when web app was just meant to display some data using markup languages. There was a time when every software needed to be installed in every machine that want to use the software. Improvement in server side technologies, browsers and internet speed have fueled the phenomena of SAAS (Software As A Service). The rule of building a software has changed drastically. Most of the software that are developed today is developed by considering "use from any machine at anytime philosophy". There is a boom in SAAS market. More and more SAAS