Open source note taking and to-do app with synchronization
An open-source, self-hosted memo hub with knowledge management
sleek is a todo.txt manager, free and open-source (FOSS)
All your favorite services in one place
To-do manager, notepad, RSS reader...
Easy to set up bug tracking with Java
The Freeplane add-on that syncs a GTD mind map with a todo.txt file
WeekToDo is a Free and Open Source Minimalist Weekly Planner and To Do
a free mind mapping tool, to especially assist decision making
Open source project management
Free flexible open source todo manager featuring hierarchical tasks
A note taking program with WebDAV sync
Collabtive is web based project management software. Simple and easy.
PHP & MySQL/SQLite -based Project Management System
Piggydb helps you have more fun with knowledge creation.
Cross Platform Sticky Note App For The Desktop
SCRUM task board
A simple issue tracker system.