http://www.abtestmaster.com - A/B Test Master is an open source framework for split tesing with ASP.NET MVC applications. It is ideal for startups as well as established enterprises to learn about their user's behaviour and measure success of changes made. A/B Test Master is an open source framework for split tesing with ASP.NET MVC applications. It is ideal for startups as well as established enterprises to learn about their user's behaviour and measure success of changes made.