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Microsoft Project alternatives · Project Management

Open-source alternatives to Microsoft Project

Microsoft Project is not described as open source on its own site. 12 of the 75 other project management tools in this directory are open source, according to their own sites.

Microsoft Project is a paid product with a free trial, starting at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024). All of them are free or have a free plan.

12 tools · Listings checked up to Oct 9, 2026 · Where the facts come from

How each one differs from Microsoft Project

  1. ProjectLibre

    Microsoft Project-compatible scheduling: free desktop app, paid cloud

    • ProjectLibre starts at $9.99 per user / month, billed annually. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • ProjectLibre has a free plan. Microsoft Project does not, though it has a free trial.
    • Only ProjectLibre lists a web app.
    • Only ProjectLibre lists macOS and Linux apps.
    ProjectLibre vs Microsoft ProjectProjectLibre pricing and details

  2. GanttProject

    Free, open-source desktop Gantt chart app for Windows, macOS and Linux

    • GanttProject starts at €1 per active team member / month for the optional Cloud service; desktop app is free. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • GanttProject has a free plan. Microsoft Project does not, though it has a free trial.
    • Only GanttProject lists macOS and Linux apps.
    • GanttProject is open source, according to its own site.
    GanttProject vs Microsoft ProjectGanttProject pricing and details

  3. OpenProject

    Open-source project management for classic and agile teams

    • OpenProject starts at $7.25 per user / month, billed yearly (5-user minimum). Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • OpenProject has a free plan. Microsoft Project does not, though it has a free trial.
    • Only OpenProject lists a web app.
    • Only OpenProject lists iOS and Android apps.
    OpenProject vs Microsoft ProjectOpenProject pricing and details

  4. Kan

    Open-source kanban boards, built as an alternative to Trello

    • Kan starts at $8 per user / month, billed yearly. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Kan has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Kan lists a web app.
    • Only Microsoft Project lists a Windows app.
    Kan pricing and details

  5. Plane

    Open-source project management with cycles, wiki and AI agents

    • Plane starts at $6 per seat / month, billed annually. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Plane has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Plane lists a web app.
    • Only Plane lists macOS, Linux, iOS and Android apps.
    Plane pricing and details

  6. Redmine

    Free, self-hosted issue tracker and project management web app

    • Redmine is free. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Redmine has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Redmine lists a web app.
    • Only Microsoft Project lists a Windows app.
    Redmine pricing and details

  7. Kanboard

    Free, self-hosted kanban board software under the MIT License

    • Kanboard is free. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Kanboard has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Kanboard lists a web app.
    • Only Microsoft Project lists a Windows app.
    Kanboard pricing and details

  8. WeKan

    Open-source kanban boards with swimlanes, self-hosted or hosted

    • WeKan starts at €50 per year for hosted WeKan with the Admin Panel. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • WeKan has a free plan. Microsoft Project does not, though it has a free trial.
    • Only WeKan lists a web app.
    • Only WeKan lists an Android app.
    WeKan pricing and details

  9. Leantime

    Open-source project management built with neurodivergence in mind

    • Leantime starts at $8 per user / month, billed annually. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Leantime has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Leantime lists a web app.
    • Only Leantime lists iOS and Android apps.
    Leantime pricing and details

  10. Taiga

    Open-source agile project management with Scrum and Kanban

    • Taiga starts at €5 per month for unlimited users (€50 billed annually). Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Taiga has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Taiga lists a web app.
    • Only Microsoft Project lists a Windows app.
    Taiga pricing and details

  11. Huly

    Open-source project management with chat, docs and video calls

    • Huly starts at $19.99 / month flat, unlimited users. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Huly has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Huly lists a web app.
    • Only Huly lists macOS and Linux apps.
    Huly pricing and details

  12. Fizzy

    Free kanban tracker for bugs, issues and ideas from 37signals

    • Fizzy is free. Microsoft Project starts at $30.00 per user / month, paid yearly (Plan 3), or $679.99 one-time (Standard 2024).
    • Fizzy has a free plan. Microsoft Project does not, though it has a free trial.
    • Only Fizzy lists a web app.
    • Only Fizzy lists iOS and Android apps.
    Fizzy pricing and details

Common questions

Is there an open-source alternative to Microsoft Project?

Yes. ProjectLibre, GanttProject, OpenProject, Kan, Plane, Redmine, Kanboard, WeKan and 4 more are open source, according to their own sites.

Is Microsoft Project open source?

Microsoft Project is not described as open source on its own site. The listing was checked on Oct 5, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 9, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Microsoft Project: the alternatives its listing names first, then the tools that share the most features with it.