Internet resource for time management (according to the method of David Allen)

Question

CMS

I started reading David Allen's How to Get Things Done. I read the first 100 pages and really enjoyed it. But when I read for "incoming baskets" and reminders, the question arose, is there any product that has already been implemented based on its methods? I would like to learn and start using. Of course, you can start using pivotaltraker with google calendar (or any other combination of software products to solve these problems), but I would like to find a site that just implemented David's methods in the form of a software product.

Answer 1

• Nirvana - http://www.nirvanahq.com/ (still beta, but everything works (invite - lifehack ))
  
• Somethings - http://thn.gs/ (design changed not for the better; apparently abandoned; on habré )
  

In the comments, I think they will give more links. I myself have used these two alternately, but switched to a recent miniplane . A little not gtd'shny, but it's more convenient for me.

Answer 2

Under Linux, GTG (Getting Things Gnome) is very well tuned for GTD purposes.
True, this is not an online service, but a desktop application, but as for me, this is rather a plus.