Best Open Source Alternatives to Tom's Planner

Compare the best free and open-source alternatives to Tom's Planner — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 5 alternatives

Tom's Planner

Proprietary SaaS

PricingFreemium

Platformsweb

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Tom's Planner alternatives compared

Open-source alternatives to Tom's Planner, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Mermaid	89,519	MIT	LinuxmacOSWindowsWeb	No	Aug 2026	Visit
Frappe Gantt	6,068	MIT	LinuxmacOSWindowsWeb	No	Jun 2026	Visit
GanttProject	1,086	GPL-3.0	LinuxmacOSWindows	No	Jul 2026	Visit
LibrePlan	348	AGPL-3.0	LinuxmacOSWindowsDocker	Yes	Jul 2026	Visit
dotProject	214	GPL-2.0	LinuxmacOSWindowsDocker	Yes	Nov 2024	Visit

Top open-source Tom's Planner alternatives

Mermaid89,519MIT

Markdown-inspired diagramming library that generates Gantt charts and flowcharts from text.

LinuxmacOSWindowsWeb

vs Tom's Planner: a free, open-source option you fully control, licensed MIT.

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Frappe Gantt6,068MIT

Interactive SVG Gantt chart JavaScript library featuring drag-and-drop timeline resizing.

LinuxmacOSWindowsWeb

vs Tom's Planner: a free, open-source option you fully control, licensed MIT.

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GanttProject1,086GPL-3.0

Desktop project scheduling application featuring Gantt charts and resource loading.

LinuxmacOSWindows

vs Tom's Planner: a free, open-source option you fully control, licensed GPL-3.0.

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LibrePlan348AGPL-3.0

Web-based collaborative planning tool featuring interactive Gantt charts and tracking.

LinuxmacOSWindowsDockerWeb

vs Tom's Planner: a free, open-source option you fully control, licensed AGPL-3.0.

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dotProject214GPL-2.0

Classic web-based multi-user project management application featuring Gantt chart utilities.

LinuxmacOSWindowsDockerWeb

vs Tom's Planner: a free, open-source option you fully control, licensed GPL-2.0.

Visit Details