Template engine - Smarty (http://smarty.php.net)

Scripting language - PHP (http://php.net)

AJAX toolkit - dojo (http://dojotoolkit.org)

ACL library - phpGACL (http://phpgacl.sourceforge.net/)

Windows AMP server - XAMPP (http://www.apachefriends.org/en/xampp.html)

Audio Processor - SoX (http://sox.sourceforge.net/)

Content Management System - eZ publish (http://ez.no)

ecommerce - X-Cart (http://x-cart.com)

Blog - b2evolution (http://b2evolution.net)

Timecard - timesheet.php (http://freshmeat.net/projects/timesheet.php/)

Project Management - dotProject (http://www.dotproject.net/)

Browser - Firefox (http://mozilla.org) + Firebug plugin

Hosting Company - (http://hostforweb.com)

Map API - Google (http://code.google.com/apis/maps/)