CheatSheets

Javascript

http://www.addedbytes.com/cheat-sheets/javascript-cheat-sheet/

HTML

http://www.addedbytes.com/cheat-sheets/html-cheat-sheet/

CSS

http://www.addedbytes.com/cheat-sheets/css-cheat-sheet/

XML

http://www.mulberrytech.com/quickref/XMLquickref.pdf

XML Schema

http://www.xml.dvint.com/docs/SchemaStructuresQR-2.pdf

http://www.xml.dvint.com/docs/SchemaDataTypesQR-2.pdf

XML Trans

http://www.mulberrytech.com/quickref/XSLT_1quickref-v2.pdf

http://www.mulberrytech.com/quickref/XMLquickref.pdf

Regular Expressions

http://www.addedbytes.com/cheat-sheets/regular-expressions-cheat-sheet/