what is your favorite third party API for Google maps V3 ??? and why?

I need from you to share your experience with any third party API for Google Maps V3 and your rating please share information like

name , url , tech used (serverside , clientside ) , price or license , performance , any thing you would like to add

for example I like:

1-markermanager

2-http://google-maps-utility-library-v3.googlecode.com/svn/tags/markermanager/1.0/docs/reference.html

3-javascript

4-free

5-it had 开发者_如何学Cvery good performance

these information might be very handy for any developer

thanks

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There are many libraries out there.

I personally have used

keydragzoom,javascript,free,good performance