Well, since Chandler is written in Python and uses wxPython for display, it's possible it could be ported to Maemo. However, Chandler appears to be a large application, in terms of system resources as well as screen real estate. I think it would take a very large effort to port it, to reformat all the screens and to shrink the codebase down to run on a 400MHz/128MB RAM device. OTOH, I really don't have any experience w/Chandler, and I reserve the right to be totally wrong if someone gets it running.