I have often benefited from recommendations for Things I Didn't Know I Wanted.
Given that Less Wrong is a community of unusually intelligent, critical, and self-improvement-focused people, I suspect we can generate a pretty helpful thread of product recommendations — perhaps even a monthly thread of product recommendations.
Rules:
- Post one product your recommend per comment, so they can be discussed and voted on independently.
- Provide a link for purchasing the product.
- No books, movies, TV, games, or music. (These should go in other threads, like this one or this one.)
Nozbe is, succinctly, a Getting Things Done (GTD) implementation. The service synchronizes with Evernote, Dropbox and Google Calendar. It has all the core functionality you really need and restrains itself from being too complicated. You can synchronize between a PC or Mac application, an in-browser app, and iPhone and iPad and Android apps.
It's not free but it's very reasonable for what you get. I've been using it for a while, after a long series or attempting other solutions, and I strongly advocate it for anybody looking for an integrated "getting organized" solution.
I tried Nozbe and I liked it. I also tried ToodleDo, and I liked it even more. These are probably the top two to-do list apps our there.