Playing with the two, this looks identical to Todolist. I'm about to write a CCK submodule ala #599498: make a cck field so that I can plug it onto the existing casetracker_basic_case of OpenAtrium (to give it a more ClockingIT feel), but now I don't know which module to write it for ;) I'm gonna go with Todolist simply because it has a release, but are yall planning on joining efforts?