Chipmunk now has it's own website. You can find all the information and documentation you'll need there.

Also, by popular request, Chipmunk hosting has moved to GitHub

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Thousands of hours and several years have been put into making Chipmunk what it is today. If Chipmunk has worked well for you, please consider donating to help support further development! We at Howling Moon software like to know our hard work is appreciated. About Us