Doit.im is described as 'Simple GTD application to manage your tasks and to-dos. Syncs with web server. Complete with the usual Inbox, Today, Next, Tomorrow, Scheduled and Someday "buckets" as most GTD programs have. You can also create Projects for tasks with multiple steps' and is a popular todo list manager in the office & productivity category. There are more than 100 alternatives to Doit.im for a variety of platforms, including iPhone, Web-based, Android, Mac and Windows apps. The best Doit.im alternative is Todoist, which is free. Other great apps like Doit.im are Wekan, TickTick, Org mode and Lunatask.