Does DoBeDo work with Mountain Lion (10.8)?

No, it does not.

Is the Tiger (10.4) version still available?

Yes, version 3 of DoBeDo can be downloaded.
Note: Version 3 is no longer supported, and future development on that branch has ended.

Can I manually order my tasks?

No, tasks that share the same priority or due date can not be re-ordered.

What about alarms?

You can not set alarms in DoBeDo.

Can I view or edit todo items in subscribed calendars?

Yes you can view them, but don’t attempt to edit the tasks as they are read only.

Do you accept donations?

DoBeDo is freeware. But, if you are overwhelemed with guilt at getting all this awsomeness for free, you can donate.