Ganttapp is online. You don't need to register, you just need your google account. Login and try it :)
Last update 13 September 2010
New design and bug fixes
We're still in development, thought it is already usable, here are some of the known issues, to be fixed briefly. Feature suggestions are always welcome. Known issues:
Slow in Internet explorer, we suggest Firefox or Chrome
Delete and "more actions" in the project view are disabled for the time being
Project view not updating, needs a manual refresh for new projects to show