Our CSE committee asked me to look for an online organizer/portal for a student. I immediately thought of PageFlakes, so I have been searching for an open source equivalent.
I finally found Posh from Portaneo
, a French Company. It is still a little rough around the edges: A few items don't work consistently and French Comes up in the English version once in awhile (I'm hacking that to fix such occurrences as I find them) . Nonetheless, it is a nice little AJAX application that has a calendar/scheduler, to-do list, bookmarks and a very slick RSS reader among other cool things.
I think I'll use it with my class next year
I gave it an overview on my blog