Quick Reference Cards [1]
CSS Cheat Sheet [2]
HTML Cheat Sheet [3]
CSS WC3 Standard [4]
MySQL Cheat Sheat [5]
PostgreSQL Cheat Sheet [6]
Apache Cheat Sheet [7]
Ruby Cheat Sheet [8]
mod_rewrite Cheat Sheet [9]
Google Cheat Sheet [10]
Python Cheat Sheet [11]
ASCII Character Codes [12]
htaccess Cheat Sheet [13]
Coldfusion Cheat Sheet [14]
Windows Cheat Sheet [15]
Unix Cheat Sheet [16]
JavaScript Cheat Sheet [17]
SQL Cheat Sheet [18]
Hex Color Site:
Color Mixers [19]
Links:
[1] http://www.digilife.be/quickreferences/quickrefs.htm
[2] http://home.tampabay.rr.com/bmerkey/cheatsheet.htm
[3] http://webmonkey.wired.com/webmonkey/reference/html_cheatsheet/
[4] http://www.w3.org/TR/REC-CSS1
[5] http://www.ilovejackdaniels.com/mysql_cheat_sheet.pdf
[6] http://www.petefreitag.com/cheatsheets/postgresql/
[7] http://www.petefreitag.com/cheatsheets/apache/
[8] http://www.zenspider.com/Languages/Ruby/QuickRef.html#36
[9] http://www.ilovejackdaniels.com/mod_rewrite_cheat_sheet.pdf
[10] http://www.googleguide.com/advanced_operators_reference.html
[11] http://www.yukoncollege.yk.ca/%7Ettopper/COMP118/rCheatSheet.html
[12] http://www.petefreitag.com/cheatsheets/ascii-codes/
[13] http://www.thejackol.com/htaccess-cheatsheet/
[14] http://www.petefreitag.com/cheatsheets/coldfusion/
[15] http://www.ss64.com/nt/
[16] http://www.rain.org/%7emkummel/unix.html
[17] http://www.ilovejackdaniels.com/javascript_cheat_sheet.pdf
[18] http://www.3gwt.net/demo/SQL_redux.html
[19] http://colormixers.com/mixers/cmr/