Best free cron job monitoring tools (2026)

What matters in a cron monitor

The core feature is simple: alert when a job misses its window. But there are real differences in what "missing" means and what happens after the alert fires.

Feature comparison (as of July 2026)

Pricing and features change: check each provider's site before making a decision. Competitor data is based on public documentation and may not reflect recent updates.

"Partial" means feature exists but is restricted to paid plans or has limited scope. Free-tier caps are approximate as of July 2026: verify at each provider's pricing page. LastPing is this page's publisher; we have an obvious interest in its favour.

Each tool in context

What each tool actually does well and where it falls short.

Which one should you use?

The right answer depends on what you're monitoring and whether you want to self-host.

Common questions

Straight answers to the questions people actually ask.

• What is the best free cron job monitoring tool in 2026?

  For individuals, LastPing and Healthchecks.io are the strongest free options. Healthchecks.io is more established, with a larger community and a self-hostable open-source version; its free hosted plan caps at 20 monitors, while the self-hosted version has no cap. LastPing has no monitor cap and is free for individuals, and adds CI/CD pipeline monitoring through webhooks (catching failed, hung, and never-started runs), failure log excerpts attached to incidents, and an MCP server for AI agent self-registration. If you need unlimited monitors and want to self-host, Healthchecks.io is the one to use; LastPing is hosted-only. Cronitor and Dead Man's Snitch are primarily paid products as of 2026 with limited or no free tiers.

• What is the difference between cron monitoring and CI/CD monitoring?

  Cron monitoring (dead-man's-switch or heartbeat monitoring) expects a ping from a cron job on a schedule and alerts when the ping is late or absent. CI/CD monitoring extends this by listening to platform-native events (GitHub workflow_run webhooks, Jenkins Notification plugin events, etc.) that report whether a build run started, succeeded, or failed, without requiring any code change inside the build. CI/CD monitoring also catches hung runs (started but never completed) and never-started runs (scheduled workflow silently disabled) through the same absence-of-signal mechanism.

• Does Healthchecks.io catch hung cron jobs?

  Healthchecks.io detects absence (a job that doesn't ping in its window) but does not have a "started but hung" detection mechanism. If a job sends a start ping and then hangs, Healthchecks.io marks the check as "started" and waits. It will eventually alert when the window expires, but only on the basis of the overall window, not the start/complete pairing that makes hung detection fast. LastPing's /start endpoint specifically arms overrun detection.

• Does Healthchecks.io support CI/CD pipeline monitoring?

  Healthchecks.io supports the heartbeat/ping pattern, which can be used from within CI/CD jobs. It does not have native CI/CD webhook integrations that listen to platform events (like GitHub's workflow_run webhook) to catch never-started or hung runs without code changes to the pipeline. Healthchecks.io also does not attach failure log excerpts to incidents.

• What is Dead Man's Snitch and does it have a free tier?

  Dead Man's Snitch is a simple, focused cron monitoring service that alerts when a job doesn't check in. As of 2026, it does not offer a permanent free tier: it has a paid-only model with a trial period. It supports cron monitoring well but does not offer CI/CD pipeline monitoring or attach failure detail (failure log excerpts) to alerts.

• Which cron monitoring tools support AI agent self-registration?

  As of July 2026, only LastPing offers an MCP server (at mcp.lastping.dev) that lets an AI agent create its own dead-man's-switch monitor, configure alert destinations, and retrieve ping instructions in a single conversation, without a human visiting a dashboard. This is the agent-created monitoring model. Other cron monitoring tools (Healthchecks.io, Cronitor, Dead Man's Snitch) do not offer MCP server integration. See the LastPing MCP server page for details.

• Can I use a cron monitoring tool for CI/CD pipelines?

  Yes, but not all tools are equal for CI/CD. The simplest approach works everywhere: add a curl step at the end of your pipeline job. This catches explicit failures but not hung runs (the step never executes) or never-started runs (the pipeline never queued). LastPing's native CI/CD webhook integrations for GitHub Actions, GitLab CI, and Jenkins listen to platform events and catch all three failure modes without touching pipeline code. See the guides for CircleCI, Bitbucket Pipelines, Drone CI, and TeamCity for the ping-step approach.