If you are looking to get the code written then try Elance or one of the other code writing sites. CodeProject is for people who want to write their own code and need a little help learning. Never underestimate the power of human stupidity RAH

Please go through the links shared with you. You have speech based libraries available for C#. Now how exactly you are planning to use is what all depends. Not sure how you plan to use a web app for speech. Do some research, Google. Sandeep Mewara Microsoft ASP.NET MVP 2012 & 2013 [My Blog] [My Latest Post]: How to extend a WPF Textbox to Custom Picker