"Just To Do" is a easy and simple way of use and manage to do lists. Just write it and then do it!
* Simple lists: lists for manage basic tasks that are either done or not.
* Advanced lists: lists whose items can have with several possible states (pending, done, cancelled and unknown), instead of only two.
* Frequency lists: list for manage the frequency with which you do some tasks.
* Backups: backup and restore your lists by using XML files.
* Sync across devices: sync all your lists across multiples devices (requires CouchDB).
* (coming soon) Packaged app for Google Chrome available at the Chrome Web Store.