There are two implementations I find quite good. 1. ThinkingRock It's a desktop client for all operating systems. There are two versions. A free one (v 2.x -

There are two implementations I find quite good. 1. ThinkingRock It's a desktop client for all operating systems. There are two versions. A free one (v 2.x - still available on sourceforge [0]) and one you have to buy (v 3.x)[1] 2. Getting Things Gnome I find it slightly less convincing than ThinkingRock. What's more, it appears not to be maintained anymore. The offical website is down and there have been no update on github[2] for a while. However, it might be just what you're looking for so you should also give it a try. [0] https://sourceforge.net/projects/thinkingrock/ https://sourceforge.net/projects/thinkingrock/ [1] https://www.trgtd.com.au https://www.trgtd.com.au [2] https://github.com/getting-things-gnome/gtg https://github.com/getting-things-gnome/gtg