OpenProj is an open source project management software application.

GanttProject is free Java based, project management software that runs on the Windows, Linux and Mac OS X systems.

LibrePlan is a free software web application for project management.

GNOME Planner is a cross-platform project management tool based on the Work breakdown structure (WBS).

Bric is software that helps you manage your professional services team’s time.

ProjectLibre is an open source, freely available project management software system intended ultimately as a standalone replacement for Microsoft Project.

OpenProject is a web-based project management system for location-independent team collaboration.