A website that I use every day is
rememberthemilk.com.
This is an online task list with an excellent user interface and
general usability. It’s all done using AJAX, which means that
much of the processing is done on the client with background updates
back to the server. This allows it to be very fast and allows a
very intuitive interface.
You can set up as many lists as you like and the new tagging facility
allows tasks to belong to more than one list. Smart lists allow
you to save searches as lists and these will be dynamically
updated. You can assign tags, due dates, repeating patterns, time
estimates and multiple notes against each tag so you have a lot of
flexibility in how you use it.
I’m finding that more and more of my life is scheduled in RTM and I
can publish lists so that other people can see what I’m doing.
All this despite the fact that I have a corporate Outlook/Outlook Web
Access facility that theoretically should provide all of this
functionality. RTM just does it better and easier and I would
definitely recommend it. The only caveat is the absence of any
sort of obvious business plan for the site. There has
obviously been a lot of work put in to it and it appears very
professional. How long it can continue without making money is
not obvious. The publishers of the web site say that it will
continue to be free and that they are not going away. But then
they would say that; I would rather see some evidence of a plan to keep
it around. Especially as I now appear to be addicted.