MySql (Datenbank)
http://www.mysql.de/

Filezille (FTP Client)
http://www.filezilla.de/

Joomla (Content Management System)
http://www.joomla.de/

TYPO3 (Content Management System)
http://typo3.org/

Open Office (Alternative zu MS Office)
http://de.openoffice.org/

Gimp (Alternative zu Photoshop)
http://www.gimp.org/

Firefox (Webbrowser)
http://www.mozilla-europe.org/de/firefox/

OSCommerce (Shopsystem)
http://www.oscommerce.com/

Apache (Server)
http://httpd.apache.org/

Freemind (Mind Manager)
http://freemind.softonic.de/

EyeOS (Online OS)
http://www.chip.de/downloads/eyeOS_27733671.html

Dokuwiki (Wiki System)
http://www.dokuwiki.org/dokuwiki

FluxBB (Forum System)
http://fluxbb.org/

7-ZIP
http://www.chip.de/downloads/7-Zip_13004776.html

GeoGebra (math)
http://www.chip.de/downloads/GeoGebra_20747798.html

XAMPP
http://www.chip.de/downloads/XAMPP_22023279.html

Gute Hilfe für Einsteiger
http://simonwillison.net/2007/Aug/15/jquery/

Tolle AJAX Sammlung
http://miniajax.com/

Advanced Tool Tips: (on an picture)
http://www.taggify.net/blog/post/2008/01/How-to-add-advanced-tooltips-for-people-on-your-photo.aspx

Where you at - Leiste
http://www.comparenetworks.com/developers/jqueryplugins/jbreadcrumb.html

http://www.noupe.com/design/10-creative-rich-ui-interfaces-how-to-create-them.html