Abmash provides Web application automation based on visible rendered output. It is all about interacting with a browser as humans would do, including AJAX and forms. It lets you perform tasks like "Click the red button", "Give me all text elements directly below an image", or "Click 'Login' and wait until the login form is loaded, then type in my credentials and submit the form".
Libcvautomation is a GUI automation and testing tool based on image recognition and response. This program was designed as a direct replacement for Sikuli and Xpresser. Each solution had large problems with crashing, and both refused to function on Red Hat Linux and Ubuntu 12.04. The author really liked the way each of these programs approached GUI automation, but they simply didn't work. As such, a simple library was designed to integrate OpenCV and XTest, which can be used by BASH to drive GUI testing and automation, and works on both new and old Linux distributions.