AutoItX(part of AutoIt) - Contains redistribute free libraries with .NET interfaces for user interface automation[Free] TestStack.White - Contains source code and links to documentation to .NET based framework for Windows application automation and testing. [Open Source] Coded UI - Contains documentation of user interface testing tool provided with specified versions of Visual Studio. [Commercial] Selenium - Site of web browser automation tool with .NET provider and related documentation. silverlight-selenium - Contains integration of Selenium with Silverlight and related documentation [Open Source] canopy - f#rictionless web testing - A framework in F# on top of Selenium for writing web UI automation and tests. Contains documentation and links to download. [Open source]