Sikuli is a tool available for Linux, Windows and Mac OS X which automates tasks using images: you take a screenshot of what you want to click, right click, hover, drag and drop and so on and Sikuli performs those actions automatically, when you need it, either by using the GUI or running it via command line.

It can be useful for running repetitive tasks automatically, running some actions remotely via the command line and so on.

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Sikuli (Automation Tool Using Images) 1.0.0 Released (WebUpd8)