task management, bug tracking, kanban, project management
e-Dokyumento is web-based Document Management System (DMS)
KADOS is a full post-it web-based tool for SCRUM or Agile projects
Open Source Enterprise Project Management Software for PPM and PPO
Manage your tasks
A trading platform including ERP, CRM, and accounting
Excel Gantt, easy Scheduling for fast Planning
PHP & MySQL/SQLite -based Project Management System
Rapid Business Information Organizer
Free & Open Source - Project / Task / Time & Team Management Software
The Freeplane add-on that syncs a GTD mind map with a todo.txt file