Open-source Oracle Primavera P6 alternatives

OpenProject is a web-based project management application for teams and organizations that value transparency, flexibility and control over their data. It covers projects, portfolios, products, tasks, bugs, agile workflows, roadmaps and team collaboration in one platform, and it is built with Ruby and Angular under the GPL-3.0 license.

Key capabilities include agile boards with Kanban and Scrum, project planning and scheduling with Gantt charts, product and release planning, bug tracking, and time tracking with cost reporting and budgeting. Collaboration tools cover wikis, forums, news, and meeting agendas and minutes. Integrations are listed for Nextcloud, XWiki, GitHub and GitLab, among others.

The project presents itself as an open-source alternative to Jira and Asana, along with tools such as MS Project, Monday and YouTrack. It can be self-hosted, which suits organizations with data sovereignty requirements. A free Community Edition is available to download, a 14-day free trial exists, and an Enterprise Edition adds support and add-ons in the cloud or on-premises.

GanttProject is a free desktop application for project planning and scheduling. It centers on the Gantt chart, where tasks are arranged in a hierarchy with dependencies, milestones and baselines, and it can also generate a PERT chart for a different view of the same plan.

Other features include a resource load chart, task cost calculation, export to PDF, HTML and PNG, and interoperability with Microsoft Project, Excel and other spreadsheet applications. Projects can be shared with collaborators using WebDAV, or through a commercial collaboration service called GanttProject Cloud. The app is written in Java and Kotlin and runs on desktop operating systems.

GanttProject is free and open-source software under the GNU General Public License v3. Building it requires cloning the repository with its submodules and using Gradle, and a core build without export and import features is available for quick runs. It runs locally on your machine, so no server is needed. It suits project managers, students and small teams who want a no-cost planning tool.