Gestor de Tareas
A simple task planner: quickly add, edit, and delete tasks.
Minimalist desktop "to do" list
simple php/mysql project management system for sustainability planning
Free flexible open source todo manager featuring hierarchical tasks
Todo task manager with simple, fast and intuitive user interface
Manage events and tasks using simple text files.
Selenio helps you manage your reminders in an extremely quick way
Versatile Personal Information Manager
Cosas is a web emulation of the GTD app Things
HandyOrganizer is a personal information manager (PIM).