Some of the cheat sheets of my exams at ETH (Computer Science MSc). Released under the CC-BY-SA-4.0 License.
The cheat sheets are all handwritten, almost entirely in English. I don't know whether it's a good idea to just print and use it, nor do I know whether some courses might enforce the rule of hand-written cheat sheets only. Use at your own risk!
Everyone is welcome to participate and update cheat sheets! Handwritten, LaTeX and any other formats are all good!