CodeGurus

Approximate Conversion from Points to Pixels
http://reeddesign.co.uk/test/points-pixels.html

Subversion Cheat Sheet
http://www.abbeyworkshop.com/howto/misc/svn01/

.htaccess Cheat Sheet
http://www.thejackol.com/htaccess-cheatsheet/

RegEx Cheat Sheet
http://www.petefreitag.com/cheatsheets/regex/

Compatibility Master Table
http://www.quirksmode.org/compatibility.html

Oh My ZSH terminal plugin
https://github.com/ohmyzsh/ohmyzsh/wiki/Cheatsheet

Front-End Cheat Sheets (inc React)
https://www.frontendcheatsheets.com/
https://www.frontendcheatsheets.com/react – React Cheat Sheet