Roboter is an autoclicker (and autokeypresser) for both linux, windows and mac (not tested on mac, but seems to work). When I searched for one for Linux, I only found a single one that was really worth anything, and that one was trial-only payware. So I decided to make my own.
Java2 version 7 or newer. You can check if you have it using this command line command (Windows: Start->run->cmd):
If you get nothing or if it's telling you that it doesn't know the command "java", you probably don't have java. If you get something, it should look like this:
java version "1.x.x_xx" Java(TM) SE Runtime Environment (build 1.x.x_xx-xxx)
If the number is 1.7 or larger, Roboter should run.
If you don't have Java or an old version, you can download the newest one at "Download".
If everything works, you can just double-click the jar file, but sometimes a compressing software like WinZip graps this file extension.
If that happens, it's easiest to just run the Jarfix,