Website: Cheat-Sheets.org

I found this site useful… And, they’ve got an extensive list of topics to take up, too…

The Manual.su’s project. All cheat sheets, round-ups, quick reference cards, quick reference guides and quick reference sheets in one page.

.NET, ActionScript, Ada, AJAX, Apache, APT, ASCII, ASP, AWK, C, C#, C++, Camera, Characters, Chemistry, chmod, ColdFusion, Colour, Computer Science, Countries, CSS, CVS, Debian, Delphi, Django, Doctypes, DOM, DTD, Eclipse, Ed, Emacs, Encoding, Emoticon, File, Firefox, Fonts, Freeware, FTP, Gift, Gimp, Gmail, Google, htaccess, HTML, Icons, Internet Explorer, IVR, Java, JavaScript, JSP, Languages, LaTeX, Linux, Logic, Math, MathML, MATLAB, MFC, Microformats, MIME, mod_include, mod_perl, mod_rewrite, MySQL, Numbers, OpenSSH, Oracle, Perl, Photoshop, PHP, Physics, PostgreSQL, Prototype, Python, Regular Expressions, Religion, rpm, Ruby, Ruby on Rails, Screen, Sed, Sendmail, Smile, Social Bookmarks, Solaris, SQL, SQL Server, SSI, SVN, Sybase, Tcl/Tk, TCP, TeX, UML, Ubuntu, Unicode, Unix, UTF, VB, VBScript, Vi, Vim, Visual Basic, VoiceXML, Wikipedia, Windows, WordPress, World of Warcraft, XHTML, XML, XML Schema, XPath, XSL, XSLT, XSS, Yahoo