WorkFlowy is a browser-based to-do tracker tool which allows users to organize their tasks in an hierarchical tree-based structure.
The app allows each to-do task to be marked with one or several tags for easy retrieval in the future via tag-based search. In addition to the traditional site, WorkFlowy has a special version dedicated to mobile devices.
The app features on its homepage a list of impressive testimonials, one of them being from Matt Cutts, head of Google webspam efforts, which states that the project has become one of three tabs that he keeps open in the browser, along with Gmail and Google Calendar.
The site was launched in September 2010 by co-founders Jesse Patel and Mike Turitzin. It has around 10’000 visitors on a monthly basis and it has been featured extensively in tech blogs such as TechCrunch, TheNextWeb and LifeHacker.