Some of the good Cheat Sheet found on internet

OverAPI: This cheat sheet for many web programming language such as JS, PHP, Node, CSS etc...
URL: https://overapi.com/

Git Sheet: Each GIT command explains in detail
URL: https://gitsheet.wtf/

Developer Cheat sheet: Contains various cheat sheet like React, ES6 etc...
URL: http://www.developer-cheatsheets.com/