Гарын авлагууд - PHP, Rails, Java…

PHP
http://www.ilovejackdaniels.com/php_cheat_sheet.pdf

CSS
http://lesliefranke.com/files/reference/csscheatsheet.html
http://home.tampabay.rr.com/bmerkey/cheatsheet.htm

Ruby on Rails
http://ruby.cenophobie.com/RubyCheat.pdf
http://www.blainekendall.com/uploads/RubyOnRails-Cheatsheet-BlaineKendall.pdf

Java
http://mindprod.com/jgloss/jcheat.html
http://lesliefranke.com/files/reference/javacheatsheet.pdf

JSP
http://ndpsoftware.com/JSPXMLCheatSheet.html

Javascript
http://tiger.la.asu.edu/Quick_Ref/javascript_cheat_sheet.pdf

HTML
http://www.webmonkey.com/webmonkey/reference/html_cheatsheet/
http://lesliefranke.com/files/reference/htmlcheatsheet.pdf

Unix
http://mainline.brynmawr.edu/~gtowell/unix.pdf
http://freeengineer.org/learnUNIXin10minutes.html

Linux
http://www.denness.net/LinuxCLICheatSheet.pdf

C
http://claymore.engineer.gvsu.edu/~steriana/226/C.CheatSheet.pdf

C++
http://www.dreamincode.net/downloads/ref_sheets/cpp_reference_sheet.pdf