Best Free Gantt Chart Software 2026: 6 Options Compared
Best free Gantt Chart Software compared: GanttProject, ProjectLibre, OpenProject, Redmine and 2 more, with free-plan limits, platforms and prices from official pages checked October 24, 2026.
•3 min read•Project & Task Management
Quick comparison
| Tool | Price | Platforms | Best for | Tested |
|---|---|---|---|---|
| GanttProject | Free (Free desktop app that runs offline; optional GanttProject Cloud is pay-as-you-go) | Windows, macOS, Linux | A solo, offline Gantt chart | Docs only |
| ProjectLibre | Free (Homepage calls the desktop edition a free replacement for Microsoft Project); paid from $9.99 per user/month, billed annually (Core cloud) | Desktop | Moving off Microsoft Project | Docs only |
| OpenProject | Free (Community edition with no minimum users and community-only support); paid from EUR 5.95 per user/month, 25-user minimum (Basic) | Web, Self-hosted | Teams that can self-host | Docs only |
| Redmine | Free (Open source project tracker with built-in Gantt chart and calendar; you host it) | Self-hosted (Ruby on Rails) | Self-hosted issue and schedule tracking | Docs only |
| TeamGantt | Free (Free Personal plan: 1 user, 1 project, 40 tasks, with dependencies and drag-and-drop scheduling); paid from USD (symbol only on page) 59 per month, billed monthly (Base; annual saves 20%) | Web | Tiny hosted projects | Docs only |
| Plane | Free (up to 12 users with basic roles and views); paid from $6 per user/month, billed annually ($8 billed monthly, Pro) | Web, Self-hosted | Modern open-source team planning | Docs only |
Independent comparison. Paid placements are labelled separately; editorial links earn no affiliate commissions. Learn more.
Good fit if
- You plan alone and want no account (GanttProject is the pick)
- You have a team and a server (OpenProject is the pick)
- You want a small hosted Gantt to share (TeamGantt is the pick)
- You come from Microsoft Project files (ProjectLibre is the pick)
Not ideal if
- You need paid-tier features, uptime guarantees or support that these free plans leave out
Gantt charts are free in two shapes: desktop schedulers and hosted tools with a capped free plan. GanttProject is a free desktop app that runs offline and reads and writes Microsoft Project files, which makes it the quickest path for a one-person plan. ProjectLibre is described as a free desktop replacement for Microsoft Project. OpenProject, with a Community edition under GPL-3.0, shows work packages on a timeline with dependencies, though the Gantt PDF export is an Enterprise add-on. Redmine, also self-hosted, has a built-in Gantt chart and calendar. TeamGantt gives a hosted Gantt on a free plan limited to one user, one project and 40 tasks. Plane has a free plan for up to 12 users, with dependencies in the timeline limited to paid plans. ClickUp lists Gantt as a trial only on its free plan. The trade-off is collaboration against cost. Desktop tools are free and private, but sharing means exporting a file. Hosted tools let a team update the plan together, but the free tier stops at a tiny task or user count. If your schedule has more than a few dozen tasks and several people, self-hosting OpenProject or Redmine is the most generous free route, at the cost of running a server.
GanttProject
Free desktop app for Windows, macOS and Linux that runs offline and reads Microsoft Project files. License GPL-3.0 from the repository.
Price: Free (Free desktop app that runs offline; optional GanttProject Cloud is pay-as-you-go) (GanttProject pricing, checked 2026-10-24).
Platforms and license: Windows, macOS, Linux. GPL-3.0 (open source).
Project activity: 1.1k GitHub stars · latest release ganttproject-3.3.3316 (Jan 22, 2024) · last commit Oct 27, 2026
Best for: A solo, offline Gantt chart.
Worth knowing: Reads MS Project MPX/MPP/MSPDI files and exports MSPDI. Homepage did not name the license; GPL-3.0 is from the repository LICENSE file.
ProjectLibre
Homepage describes a free desktop replacement for Microsoft Project; license not named. Cloud Core is $9.99 per user a month billed annually.
Price: Free (Homepage calls the desktop edition a free replacement for Microsoft Project); paid from $9.99 per user/month, billed annually (Core cloud) (ProjectLibre pricing, checked 2026-10-24).
Platforms and license: Desktop. Not named on homepage.
Best for: Moving off Microsoft Project.
Worth knowing: Homepage describes it as open source but names no license or platform list. Enterprise/PMO Cloud is $29.99 per user per month billed annually.
OpenProject
GPL-3.0 Community edition with Gantt timeline and dependencies, no minimum users. Gantt PDF export is an Enterprise add-on.
Price: Free (Community edition with no minimum users and community-only support); paid from EUR 5.95 per user/month, 25-user minimum (Basic) (OpenProject pricing, checked 2026-10-22).
Platforms and license: Web, Self-hosted. GPL-3.0 (open source).
Project activity: 16.7k GitHub stars · latest release v17.9.4 (Oct 26, 2026) · last commit Oct 27, 2026
Best for: Teams that can self-host.
Redmine
GPL-2.0 tracker with Gantt chart and calendar built in. You install it yourself on Ruby on Rails, and it is dated in appearance.
Price: Free (Open source project tracker with built-in Gantt chart and calendar; you host it) (Redmine pricing, checked 2026-10-24).
Platforms and license: Self-hosted (Ruby on Rails). GPL-2.0 (open source).
Best for: Self-hosted issue and schedule tracking.
TeamGantt
Free Personal plan: 1 user, 1 project, 40 tasks, with dependencies and drag-and-drop. Base costs $59 a month.
Price: Free (Free Personal plan: 1 user, 1 project, 40 tasks, with dependencies and drag-and-drop scheduling); paid from USD (symbol only on page) 59 per month, billed monthly (Base; annual saves 20%) (TeamGantt pricing, checked 2026-10-24).
Platforms and license: Web. Proprietary.
Best for: Tiny hosted projects.
Plane
AGPL-3.0 tracker, free for up to 12 users. Timeline dependencies are not on Free; Pro is $6 per user a month billed annually.
Price: Free (up to 12 users with basic roles and views); paid from $6 per user/month, billed annually ($8 billed monthly, Pro) (Plane pricing, checked 2026-10-22).
Platforms and license: Web, Self-hosted. AGPL-3.0 (open source).
Project activity: 61.6k GitHub stars · latest release v1.4.2 (Aug 23, 2026) · last commit Oct 27, 2026
Best for: Modern open-source team planning.
Worth knowing: SSO (SAML, OIDC), wiki, time tracking and intake forms are paid features.
Which one to pick
- You plan alone and want no account: GanttProject
- You have a team and a server: OpenProject
- You want a small hosted Gantt to share: TeamGantt
- You come from Microsoft Project files: ProjectLibre
Limits of this review
Docs-only for GanttProject, ProjectLibre, OpenProject, Redmine, TeamGantt, Plane: we did not install or run them, so feature claims come from vendor pages. Vendor prices and free limits change; confirm on the linked pricing page before you commit.
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Kevin Fan
Kevin Fan is a SaaS founder. He runs Free Instead Of, which tracks free and open-source alternatives to paid software and checks each price and free-plan limit against the vendor's own pages.
Methodology
Based on official pricing, license and product pages checked between 2026-10-22 and 2026-10-24: GanttProject, ProjectLibre, OpenProject, Redmine, TeamGantt, Plane. Prices, free limits and licenses are the figures shown on those pages on those dates. No tool on this page was installed or run. No accounts were created.