MyLifeOrganized Alternatives for Windows

Todoist: To-Do list and Task Manager.

ToDoList is a jack-of-all-trades organizer software that goes far beyond managing shopping lists. The tool allows to create short and precise task list.

A simple and friendly task manager written in Python.

fluxday is a user-friendly, free & opensource task & productivity management tool for growing startups.

Ora is a real-time all-in-one workspace for teams.

Org-mode is an Emacs Mode for Notes, Planning, and Authoring.

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries, etc.

todo.txt is software and operating system agnostic; it's searchable, portable, lightweight and easily Todo management software.

Taskwarrior is an open-source, cross platform time and task management tool. It has a command-line interface rather than a graphical user interface.

UV Outliner is a single pane outliner with multicolumn support.

GTDNext is a task management app available online and works in Chrome, IE and Firefox.

Tasque is an open source task management application.

Conqu is a simple yet powerful task management tool designed to help you conquer your inbox and get things done.

Nozbe is a to-do, task, project and time management application.

Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email.

Go For It is a simple and stylish productivity app, featuring a to-do list, merged with a timer that keeps your focus on the current task.

Holiline Reminder is a free software calendar program for Windows.

Kana Reminder is a program which can be used to set a reminder to be triggered at a specified time.

FCorp My Calendar is a free software to manage a diary, notes, schedules, birthdays, etc.