Browse Ajax Scripts and Kits with Ajaxcase.com.   You can see top viewed, top rated, and Demos.   Also, if you have a nice tool that you have created, you can “suggest an Ajax”.

Link >> Ajaxcase.com

When you are developing you need to work with as much free and good stuff as you can, so I have found this link that I think that anyone will digg it.

http://www.ajaxflakes.com/ui/color-tools-theoryschemes-and-references-all-in-one-neat-place/

All color tools based on ajax schemes.

Ajaxload has a very cool loading icon / progress bar generator.   Here is a quick one I made:

Choose you symbol, forground and background color.

http://www.ajaxload.info/

 Also, here are some quick grab bags of activity indicators:

http://www.napyfab.com/ajax-indicators/

http://mentalized.net/activity-indicators/

Google Maps Tutorial (excellent):

http://www.econym.demon.co.uk/googlemaps/

Google Maps API Reference:

http://www.google.com/apis/maps/documentation/reference.html

Google Maps Wiki:

http://mapki.com/

Google Maps Group:

http://groups.google.com/group/Google-Maps-API

More resources and examples:

http://atenasio.googlepages.com/gdd2007.html

Interface Elements for JQuery is a collection of interface effects and controls built on JQuery the lighweight Javascript Library.

http://interface.eyecon.ro/demos