sleek is a todo.txt manager, free and open-source (FOSS)
Free & Open Source - Project / Task / Time & Team Management Software
Web-based Project Management System using the Kanban methodology
webbasierte Zeiterfassung
e-Dokyumento is web-based Document Management System (DMS)
Manage your tasks
Project Portfolio Management
FreelancerBooks -Project Management for Freelancers and Agencies
PWM let you organize your project in a Web 2.0 way.
Open-source Translation Management System (TMS)
Project & Task Manager
Agile + Pomodoro Time Management Freeware
task management, bug tracking, kanban, project management
Open Source, tasks, bug tracking, agile scrum, timesheet, wiki
The scalable open source tool for lean and agile project management
Open Web Planning
Manage your multiple projects and user accounts.
TàF - Task Management
Squash TM is an open source tool for test repositories management.
Application Portfolio Manager
Booking and Stock Management inspired by international Exhibitions
Open Vistual Project Manager