In the world of Web 2.0 and cloud software, things have really become easy. There are lots of great tools. Among them are Evernote, Google Docs, Trello, Asana and more.
But one of the greatest tools out there is Wunderlist.
Of course it syncs all your devices and looks good on any platform. However, the reason I like it so much is its simplicity. It is just a simple todo list.
You create tasks and organize them in lists. That is the basic concept. But then there are the other featers, which are subtle but awesome. You can add notes to the tasks, due dates, reminders and so on. Star the most important tasks and get a priority list, which includes tasks from any other list. Use hashtags to add further information and categories.
Wunderlist is nice and easy to use. Simple but with endless features. And its free.
This is why its The One Tool for me.