Free tools

Useful tools,
no signup.

A growing set of single-purpose utilities we built for ourselves. No account, nothing tracked, nothing pinned to your IP — just open one and use it.

Turn any uptime percentage or SLA into the real downtime budget it allows — per day, month, and year.

Compose a cron schedule visually, or paste an expression and get a plain-English explanation of when it runs.

A fast reference for every HTTP status code — what it means, when it fires, and how to debug it.

Want these on a schedule?

The full platform runs these checks every 30 seconds — and pages you when something changes.

Start free

Ready?

Every product starts free — uptime, cron, synthetic, logs, RUM, incidents, and status pages. No credit card required.