[opensourcedex]

best-of ranking · updated nightly

Best Open Source Scheduling & Event Management Tools

Ranked by GitHub stars — actual adoption, not editorial taste. All 10 are free, open source and self-hostable; license and last activity on every entry.

  1. 1
    Cal.com ★ 49K

    Self-host your own scheduling page, no vendor required

    MIT TypeScript pushed 2026-09-14 details →
  2. 2
    luigi ★ 19K

    Luigi is a Python module that helps you build complex pipelines of batch jobs. It handles dependency resolution, workflow management, visualization etc. It also

    Apache-2.0 Python pushed 2026-07-18 details →
  3. 3
    salt ★ 16K

    Software to automate the management and configuration of infrastructure and applications at scale.

    Apache-2.0 Python pushed 2026-09-17 details →
  4. 4
    Tone.js ★ 15K

    A Web Audio framework for making interactive music in the browser.

    MIT TypeScript pushed 2026-09-16 details →
  5. 5
    apscheduler ★ 7.6K

    Task scheduling library for Python

    MIT Python pushed 2026-09-10 details →
  6. 6
    Rallly ★ 5.3K

    Effortless group scheduling for seamless collaboration

    AGPL-3.0 TypeScript pushed 2026-09-17 details →
  7. 7
    Easy!Appointments ★ 4.4K

    Free open-source appointment booking for any business

    GPL-3.0 PHP pushed 2026-09-14 details →
  8. 8
    Hi.Events ★ 4.0K

    Effortlessly manage events and sell tickets online

    NOASSERTION PHP pushed 2026-09-16 details →
  9. 9
    croner ★ 2.6K

    Trigger functions or evaluate cron expressions in JavaScript or TypeScript. No dependencies. Most features. Node. Deno. Bun. Browser.

    MIT TypeScript pushed 2026-08-31 details →
  10. 10
    brightbean-studio ★ 2.3K

    Open-source, self-hostable social media management platform. Schedule, publish, and manage content across 10+ platforms from a single dashboard. Free alternativ

    AGPL-3.0 Python pushed 2026-09-17 details →
method stars desc · snapshot from github api refresh nightly related Compliance & Risk Management, Human Resources (HR), Legal, Marketing & Customer Engagement, E-commerce Platforms, Document Management & E-Signatures

Related best-of lists

best Compliance & Risk Management →best Human Resources (HR) →best Legal →best Marketing & Customer Engagement →best E-commerce Platforms →best Document Management & E-Signatures →

last updated nightly · ranking method: github stars, live-tracked

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Frequently asked questions

What is the best open source Scheduling & Event Management tool in 2026?

Cal.com leads the ranking with 48,529 GitHub stars, ahead of luigi. Rankings use live GitHub star counts, refreshed nightly.

How is this list of Scheduling & Event Management tools ranked?

By GitHub stars — a proxy for adoption and community size. Each entry also shows its licence, primary language and last commit date, so you can judge maintenance activity rather than trusting the ranking alone.

Are the best Scheduling & Event Management tools free?

Every project on this list is open source and free to self-host. Some also offer paid managed hosting, but the software itself carries no licence fee.