Free Online MySQL designer

I created an Online MySQl designer:
http://www.jiansenlu.zoka.cc/sqldesigner/index.html

You can click add table at the right panel to start. The code is based on Google WWW SQL Designer.
http://code.google.com/p/wwwsqldesigner/
A good looking demo design can be found:
http://ondras.zarovi.cz/sql/demo/?keyword=default

This tool allows you to draw and create database schema (E-R diagrams) directly in browser, without the need for any external programs (flash). You only need JavaScript enabled.

WWW SQL Designer allows users to create database designs, which can be saved/loaded and exported to SQL scripts. Various databases and languages are supported. Ability to import existing database design.

Reference: A short list of our Favorite Data Modelling Tools:
http://www.databaseanswers.org/modelling_tools.htm