A new version of Sikuli(X) is available since 2013
as a follow up development

GitHub repo: RaiMan/SikuliX1 --- Getting started (homepage sikulix.com)

a word on the future of this repository ...
Most probably this repo will never come back to life again. So if you are interested in the further development of Sikuli either as a user or as a possible contributor, you should decide to switch to the above mentioned version.

Sikuli is a research project until 2012 developed by Tsung-Hsiang Chang and Tom Yeh under the supervision of Professor Rob Miller in MIT Computer Science and Artificial Intelligence Laboratory (CSAIL).

Sikuli is released under the MIT License. The details of the license is in the copyright.txt.