Apache (http://httpd.apache.org/) PHP (http://www.php.net/) apt-get install apache php4 Windows users can use something like EasyPHP (http://easyphp.org/) to get a basic Apache, MySQL, and PHP install running. vim (http://vim.org) emacs (http://xemacs.org, http://gnu.org/software/emacs) Notepad TextPad (http://textpad.com) EditPlus (http://editplus.com) Macromedia Dreamweaver etc....