To-do manager, notepad, RSS reader...
The Freeplane add-on that syncs a GTD mind map with a todo.txt file
IGSuite is a web-ajax-based Integrated Groupware Suite
Open source project management
Organize your thoughts with ThoughtStack!
Open Source, tasks, bug tracking, agile scrum, timesheet, wiki
Protect your privacy!
Manage events and tasks using simple text files.
Work productivity/efficiency analytics, work-life and time manager
Cross-platform desktop bookmarking tool
Manage Your Tasks Easily
A GTD-inspired ToDo list manager that tells you what to do next!
LAMP-based Project Management System
Chrome web browser plugin
Take notes, set your to dos,and manage your calendar all on a terminal
tiny desktop notes organizer