Inspired by Zhijian Jiang's "Cheat Sheet For Programming" and the Cheatography cheat sheet format. Personally, I enjoy using this template because it's visually appealing and the listings package makes adding code chunks effortless.
A simple tech report template, based on MIT's AI Memo 519a by Richard Stallman, back from 1981. It was the second (I think) take on the Emacs paper, which later appeared on ACM's Conference on Text Processing.
Licensed under a GPL License, and hence free to use, modify and sell as long as the license is kept the same. More information can be found on the LICENSE file.