Maveryx is a free, open source testing tool designed to provide testers and developers with advanced test automation capabilities for functional testing, regression testing, GUI testing and data-driven testing.
PyVows is an asynchronous behaviour driven development (BDD) for Python. The main reason for asynchronous testing is to make tests which target I/O run much faster, by running them concurrently. By having a faster suite, it gets run that more often, thus improving the feedback cycle.
Sikuli is a visual technology to automate and test graphical user interfaces (GUI) using images (screenshots). Sikuli includes Sikuli Script, a visual scripting API for Jython, and Sikuli IDE, an integrated development environment for writing visual scripts with screenshots easily.