Issuu

Really cool flash application over at http://issuu.com/. Upload PDF's to view in a 'page turn' engine. Nice design and some cool content.

Kuler

Check out this handy web application designed to produce harmonious colour schemes at the click of your mouse http://kuler.adobe.com/. Very nice to have if your inspiration has run dry!

Sketch up

The nice people at Google have released a free 3D visualisation app called SketchUP. You can grab it here: http://sketchup.google.com/