Cronmaster

A web UI for managing a server's cron jobs, with readable schedules, live logs and log history, and a REST API, deployed with Docker.

1.4k stars, 37 forks TypeScript On GitHub since August 2025

View on GitHub How to run it

What is Cronmaster?

Cronmaster lets you view, create and delete cron jobs and the bash scripts they call from a browser instead of editing crontab by hand. Each job can log its output, exit code and timing, and long-running jobs stream their logs live. A dashboard shows uptime, memory, CPU and GPU usage, and login works with a password or single sign-on through OIDC. Everything runs from one Docker container.

Good fit if

  • You manage cron on a home server or a few machines and want history and logs in one place.
  • You want presets that translate schedules into plain language.

Look elsewhere if

  • You need jobs across many servers from one interface: Cronicle.
  • You need dependencies between steps: Dagu.

Before you adopt it

Cronmaster is AGPL-3.0, with nothing behind a paywall. It is young, first released in August 2025, and one developer wrote almost all of it. Its Docker setup runs as root in privileged mode to edit the host's crontab, so treat its login like root access to the server.

Drafted with AI from the project's README and repository data, then checked against that data on 30 October 2026. Report a correction

Cronmaster health: is it still maintained?

71 of 100, actively developed

  • Activity
    76 commits in the last 90 days, the latest on 25 October 2026.
    23 / 30
  • Contributors
    3 people wrote the 76 commits of the last 90 days; the most active wrote 91% of them.
    5 / 20
  • Releases
    13 releases in the last 12 months; the latest, 2.4.1, on 25 October 2026.
    19 / 20
  • Replies to issues
    Maintainers answered 87% of recent issues, with a median first reply after 8 hours.
    19 / 20
  • Security practices
    No OpenSSF Scorecard for this repository yet, so this part gets a neutral score.
    5 / 10

Read from GitHub on 1 November 2026. How the score works

Cronmaster license: is it open source?

Cronmaster uses AGPL-3.0, an open-source license approved by the OSI.

  1. August 2025First published on GitHub.
  2. TodayAGPL-3.0.

How to run Cronmaster yourself

Docker
Dockerfile or compose file in the repository
Compose file
docker-compose.yml: 1 service
Setup effort
1 of 5, judged from the compose file
Kubernetes
No Helm chart in the repository
Desktop and mobile
No app builds in GitHub releases
Interface languages
English only

Install instructions: the README on GitHub.

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Questions about Cronmaster

Is Cronmaster open source?

Yes. Cronmaster is published under AGPL-3.0, an OSI-approved open-source license.

Is Cronmaster still maintained?

Its health score is 71 of 100 (actively developed). It had 76 commits in the last 90 days, the latest on 25 October 2026, and its latest release came out on 25 October 2026.

How do I run Cronmaster?

You can run it with Docker. The README on GitHub has the exact steps.

What are the alternatives to Cronmaster?

Close alternatives in the Workflow automation category include Temporal, Apache DolphinScheduler, changedetection.io.