Automated Web Testing Tools Open Source Web Application Automated Test Tool?

Open Source Web Application Automated Test Tool? - automated web testing tools

Say, hypothetically, you wanted a tool that reads a Web page to create and react to make a leap that occurred when a certain condition for entry. For example, if the chain, "Why is the sky blue?" Published in a specific area of the site to run the application of a script response.:)

How can these approaches is a problem? Are there tools available evidence, "Open Source, will be aligned? Could scripting? First Emulation HTTP stream? Other ideas?