http://www.quikmaps.com/

This great site let’s you draw over Google Maps. Very useful!

http://editor.pixastic.com

Pixtastic is an online image editor (as well as being a JavaScript library). As such, it provides a quick, free and easy way to edit images online (meaning you do not need to install any desktop software). This makes it really useful if you only have a small number of tasks to perform, or you find yourself on a computer where you cannot install any software.

http://woork.blogspot.com/2009/02/useful-ajax-auto-suggest-scripts.html

When building a website there is no need to produce each component by hand, from scratch. A far more efficient work is to bring together components developed and made available by others. This site offers scripts for Auto-Suggestion, which can help make the process of completing online forms easier and more consistent.