I'd like to manage
- Task lists(s) ie Todos
- Ad-hoc memos (notes)

on my N900 (even whilst disconnected) and on my desktop or via a web browser

So far
- N900 has built in notes & todo apps
- Conboy works quite nicely (I used to use tomboy on linux but am now using "basket")
- My current todo list is in gmail

but neither syncs with a server in any way.

Has anyone got any recommendations for a set of tools that work for this?