It's a much more hands-off approach to getting things done, but RescueTime has been awesome. Simply seeing how you actually spend your (computer) time might just be enough to make you more productive.
Ativiti looks cool, but in this article they say that the user shouldn't have to do anything differently, yet they call themselves a `platform'. I haven't actually tried the app, so maybe it isn't fair to say, but if I see `platform' I usually think of complex all-encompassing products that require some integration.<p>I think one of the reasons that there are so many apps that could be considered task management apps is that everyone has different ideas on what task management is. Also, there is some value in having local task items that are available in the tools that you already have at your disposal, ie Outlook. For us (shameless plug: <a href="http://www.ubernote.com" rel="nofollow">http://www.ubernote.com</a>), we wanted to have task lists inline in notes where we already had data, so we added the feature. Add one more app to the list....<p>Good luck with Ativiti
Omnifocus on Leopard autosyncing with my iPod Touch is the killer app for me.<p>I have tried about 5 different apps, index cards, notebooks, etc but nothing has integrated into my life as easily as this (I already carry my iPod everywhere). Although it is expensive.
I don't think there can be a category killer, because I don't think task management is a problem which can, in general, be solved with software.<p>Some people will find a solution which works for them, which fits in with their particular style of working, but for me at least these kinds of things require too much maintenance to actually compete with my current ad-hoc memory-based and almost certainly horribly inefficient system of doing things.
Yeah, this is an important question. I currently use rememberthemilk but I feel there is a potential to do far more. I discussed this recently (my interest is more about things outside the office than inside it): <a href="http://arvindn.livejournal.com/89794.html" rel="nofollow">http://arvindn.livejournal.com/89794.html</a> The commenters there had some good suggestions as well.