The Freeplane add-on that syncs a GTD mind map with a todo.txt file
Manage your tasks
Free flexible open source todo manager featuring hierarchical tasks
#1 alternative to Microsoft Project : Project Management & Gantt Chart
Sistema de economia solidária
An Management System for Contacts,Messages,Documents,Orders,Projects
Open Source, tasks, bug tracking, agile scrum, timesheet, wiki
Bringer Task Record log is a task-time tracking tool.
The most popular mindmapping and brainstorming software