Sync To-dos?

[Mac In School]

I know it ain't built in.

I know there are 3rd party apps that run their own to-dos.

Are there any 3rd party apps that sync with iCal's To-Dos? I've looked, and can't seem to find one. I'd think this would be early on developers' lists.

 

[SPeditor]

I would like to know as well.