Tools

StillOnline free tools

One-shot checks and calculators for indie SaaS: see if a site is up now, translate SLA % to downtime minutes, and copy a health route for your stack.

Probe

Free one-shot HTTP and SSL certificate check from StillOnline production probes. See status code, latency, and TLS expiry—no signup required.

Calculator

Convert uptime SLA percentages (99%, 99.9%, 99.99%) to allowed downtime per month and year for indie SaaS planning.

Generator

Generate copy-paste /health, /ready, and /live endpoint snippets for Next.js, FastAPI, Express, Rails, Laravel, and Go.

Need checks every 5 minutes?

Free: 1 URL, status page, and owner alerts.