GanttProject

GanttProject is an open-source desktop application used for project scheduling and management, built around Gantt chart visualization. The project originated in the early 2000s as a free alternative to commercial project management software, allowing users to plan tasks, assign resources, and track dependencies without a subscription fee.

The software supports task hierarchies, milestones, resource allocation, and baseline comparisons, and can export project data to formats such as PDF, HTML, and Microsoft Project files (MPXJ-based import/export). It is used by individuals, small teams, and educators for basic project planning without the overhead of enterprise project management suites.

GanttProject is distributed under an open-source license and maintained largely through community and volunteer contributions, with development activity visible on public code repositories. It has no known external funding or venture backing, consistent with its identity as a free, community-supported tool.