Microsoft To Do is described as 'Task manager with sync, reminders, recurring tasks, list sharing, color-coded organization, suggestions, subtasks, daily planning, notes, and GTD support' and is a popular todo list manager in the office & productivity category. There are more than 100 alternatives to Microsoft To Do for a variety of platforms, including iPhone, Android, Web-based, iPad and Mac apps. The best Microsoft To Do alternative is Super Productivity, which is both free and Open Source. Other great apps like Microsoft To Do are SPHW Pin, Todoist, TickTick and Workflowy.