Task Coach is a simple open source todo manager to manage personal tasks and todo lists. It grew out of my frustration that well-known task managers, such as those provided with Outlook or Lotus Notes, do not provide facilities for composite tasks. Often, tasks and other things todo consist of several activities. Task Coach is designed to deal with composite tasks.

Features:

• Creating, editing, and deleting tasks and subtasks.
• Tasks have a subject, description, priority, start date, due date and a completion date.
• Tasks can be viewed as a list or as a tree.
• Tasks can be sorted by all task attributes, e.g. subject, budget, budget left, due date, etc.
• Several filters to e.g. hide completed tasks or view only tasks that are due today.
• Task status depends on its subtask and vice versa. E.g. if you mark the last uncompleted subtask as completed, the parent task is automatically marked as completed too.
• Tasks can be assigned to user-defined categories.
• Settings are persistent and saved automatically. The last opened file is loaded automatically when starting Task Coach.
• Track time spent on tasks. Tasks can have a budget. Time spent can be viewed by individual effort period, by day, by week, and by month.
• The Task Coach file format (.tsk) is XML.

What's New in version 0.75.0:

Bugs fixed:

• Make opening (task) edit dialogs faster. (2884522)
• Use 'now' as default time in effort dialogs on Mac OS X instead of '0:00:00'. (2874824)

Features added:

• Tasks have a percentage complete property. (http://uservoice.com/a/Icogx)
• Double clicking the task bar icon will iconize the main window when it is visible and restore it when iconized (Mac OS X and Windows). (http://uservoice.com/a/dKfBt)
• When browsing for an attachment, start in the current attachment directory.
• Under Windows, prevent users from deleting temporary files and thus loosing all their e-mail attachments.

Distribution changed:

• Added a PortableApps version of Task Coach to the set of available distributions.