
I have found Gantter, a fantastic online and free project management tool for create and edit online Gantt diagrams.
One of the most attractive aspect of this tool is that you don’t need to register or login to use it. Just open the homepage and you are ready for use it (this is an extreme example of lazy registration).
The design is very neat and easy to use. Also, it allows to import from Microsoft Project files and you can save the files (download) to your local disk. Probably Volodymyr Mazepa, the author, will be adding new other fantastic features once he realize the great success on this online project management tool alternative.

gGanttic is a similar service. You don’t have to register, but because gGanttic stores your project data in your Google Spreadsheet, you have to log-in into your Google Account. Disclosure: I am a owner of gGanttic.
Gantter is more feature rich, having group tasks and resources. It is also widely covered being implemented in AJAX. gGanttic is implemented in Silverlight 2.0, so Linux users is out of luck. On the flip side gGanttic has drag-drop editing for beginning, duration, and tasks relation, and has “labels” and allow filtering by them – effectively making it easy to group tasks outside of hierarchy. Being silverlight based, gGanttic takes little longer to load, but once loaded it works real fast (subjective, comparative measurements were not done)
Michael
Hi Michael,
Thank you for sharing this comparison with us.
Your project looks very nice, too.
Unfortunately I am a Linux user so I cannot test the system by myself but would be glad once I have the opportunity to get Silverlight run.
Thank you.