Windows Mobile app with a very usable interface. Integration with email, you can manage email, projects, tasks, appointments, contexts. Task delegation and email-to-task conversion are supported.
A video demo (less than 3 minutes) can be found in youtube:
http://www.youtube.com/watch?v=qAMbEU0OWgg
It covers all the stages of GTD: http://www.needian.com/time-management.php http://www.needian.com Home/GTD-Software/
Achieve Planner is a practical Windows time management software system that helps you get organized, get focused and get more done in less time. http://www.effexis.com/achieve/tour/gtd.htm Home/GTD-Software/
Tudumo is a clean and elegant Windows GTD application that enables you to sync your tasks between multiple computers. http://www.tudumo.com/ Home/GTD-Software/
Ultra Recall is personal information, knowledge, and document organizer software for Microsoft Windows. http://www.kinook.com/UltraRecall/ Home/GTD-Software/
Simple GTD software tool for Windows
With a little bit of tweaking, Rocket! can be turned into a simple GTD software tool for Windows, though without online components. The program does not support GTD methodology in full, but offers convenient techniques of project management and getting things done. http://sites.google.com/site/rocketdm/gtd-software Home/GTD-Software/
TodoPaper is a simple, lightweight, and easy to use to-do list application for Windows. TodoPaper records your to-dos with the flexibility to make your to-do list as simple or as detailed as you desire. Organize your tasks with TodoPaper and you will be left with more time that can be spent on completing your action items. Simply open TodoPaper and get to work. http://widefido.com/products/todopaper/ Home/GTD-Software/
Seavus DropMind™ is innovative and creative mind mapping software that helps you to trigger your distinctive memories and encourage new thoughts and ideas:
Organize your ideas and quickly identify and understand the structure of complex subjects in creative mind maps
Make sure that your mind maps work properly on any computer with the flexible installation across different operating systems - Windows, Mac or Linux.
Upload mind maps from desktop to the web server, collaborate with your community and synchronize changes with your online mind maps. http://www.dropmind.com Home/GTD-Software/Mind-Mapping
TaskMerlin Project Management Software, To-Do List and Task Management Software
for your Microsoft Windows PC and office network http://www.taskmerlin.com/ Home/GTD-Software/
