ActivePerl - http://www.activestate.com/Products/ActivePerl BlueJ - http://www.bluej.org/download/download.html Crimson Editor - http://www.crimsoneditor.com/ Code::Blocks - http://www.codeblocks.org/ Context - http://www.context.cx/ Dev C++ - http://www.bloodshed.net/ Dev Pascal - http://www.bloodshed.net/ Digital Mars C++ - http://www.digitalmars.com/download/freecompiler.html Eclipse - http://www.eclipse.org/ ExamDiff - http://www.prestosoft.com/ps.asp?page=edp_examdiff Freepascal - http://www.freepascal.org/ JCreator LE - http://www.jcreator.com/download.htm jEdit - http://www.jedit.org/ Metapad - http://www.liquidninja.com/metapad/ Notepad++ - http://notepad-plus.sourceforge.net/uk/site.htm Notepad2 - http://www.flos-freeware.ch/ Open Watcom - http://www.openwatcom.org/ Pelles C - http://www.smorgasbordet.com/pellesc/index.htm PHP Hypertext Parser - http://www.php.net/ Programmer's Notepad - http://www.pnotepad.org/ PSPad - http://www.pspad.com/ Python - http://www.python.org/ Ruby - http://www.dm4lab.to/~usa/ruby/index_en.html SharpDevelop - http://www.icsharpcode.net/opensource/sd/ WebMatrix - http://www.asp.net/webmatrix/ WinMerge - http://winmerge.org/