GanttProject vs ProjectLibre

GanttProject

• Small and medium businesses that want Gantt charts at no cost
• Exchanging schedules with people who use Microsoft Project
• Planning offline on Windows, macOS or Linux

ProjectLibre

• Teams moving schedules off Microsoft Project or Project Online
• Individual project managers who want a free desktop scheduler
• Plans that need earned value, resource leveling and risk analysis

GanttProject

• Desktop only: the vendor lists Windows, macOS and Linux apps and no web or mobile version.
• Sharing a project with a team needs WebDAV or GanttProject Cloud, which is billed in euros from prepaid credits with a EUR 10 minimum top-up.
• The vendor says it is not designed to replicate every high-end enterprise feature of Microsoft Project.
• The current stable release, 3.3, came out in January 2024 and was last updated in January 2025; version 3.4 is in beta.

ProjectLibre

• The free Desktop app is for one user and individual projects; collaboration, portfolios, resource leveling, risk analysis and AI are in the paid Cloud.
• ProjectLibre Core is priced only with annual billing; the pricing section shows no month-to-month rate.
• A second, higher cloud tier is marked Coming Soon, and Core lists enterprise resource and portfolio management with an asterisk the page does not explain.
• The Cloud trial lasts 7 days and covers up to 15 users.

GanttProject

Gantt chart and task scheduling

Tasks are arranged in a hierarchy with dependencies and milestones and drawn on a Gantt chart, with an option to generate a PERT chart.

Resource load chart

Assign resources to tasks and see how much work each one carries on a separate resource load chart.

Baselines and cost calculation

Save baselines to compare the current plan with an earlier one, and calculate the cost of tasks.

Microsoft Project interoperability

Reads MPX, MPP and XML/MSPDI files produced by Microsoft Project and exports to XML/MSPDI, so plans can be exchanged with Microsoft Project users.

Export to PDF, HTML and PNG

Plans can be exported as PDF, HTML or PNG, and exchanged with Excel and other spreadsheet apps.

Optional team collaboration

Projects can be shared over WebDAV, or through GanttProject Cloud, which adds team access management, project locks, update notifications and a history of recent changes.

ProjectLibre

CPM scheduling and Gantt charts

Schedules use dependencies, constraints, calendars, baselines and critical path with float, shown as a Gantt chart, a WBS chart or a network diagram.

Microsoft Project and Primavera import

Opens Microsoft Project .mpp files and Primavera .xer files directly, keeping tasks, dependencies, resources and the project structure.

Resource leveling and shared pools

ProjectLibre Cloud finds over-allocated resources and levels them at the project or portfolio level, drawing on enterprise resource pools shared across projects.

Risk analysis and schedule audits

Cloud runs Monte Carlo risk analysis and DCMA schedule-quality audits on the schedule, alongside earned value reporting with SPI, CPI and TCPI.

AI Co-Pilot

In Cloud, the Co-Pilot builds a CPM schedule from a prompt and can then edit tasks, the WBS and resources as the project changes.

Free desktop app

ProjectLibre Desktop is installed on Windows, macOS or Linux, keeps project files on the user's computer and is offered in 54 languages.

GanttProject

• GanttProject Desktop$0

  The full desktop app for Windows, macOS and Linux, free and open source under GPL3.

• GanttProject Cloud€1

  per active team member / month, paid from prepaid credits

  Optional collaboration service, described as in beta. The team owner and members who are idle that month are not charged; a one-person team is free.

• Paid download$5+

  one-time, buyer chooses the amount from $5

  An optional purchase that funds development. The vendor states that paid and free downloads are identical.

ProjectLibre

• ProjectLibre Desktop$0

  Free, open-source desktop app for one person: Gantt chart, WBS, critical path, baselines, single-project resources, costs and earned value.

• ProjectLibre Core$9.99

  per user / month, billed annually

  The cloud plan on sale today: Microsoft Project import, Gantt and WBS scheduling, Core and Pro user modes and the AI Copilot.