Lightweight uptime and performance monitoring from multiple regions worldwide. DNS, TCP, TLS, and TTFB all broken down to the millisecond.
Simple, focused monitoring without the bloat.
Every check runs from San Francisco, New York City, and Amsterdam simultaneously. Know if the problem is global or regional.
Full timing breakdown: DNS lookup, TCP connect, TLS handshake, time-to-first-byte, and content transfer.
Understand real user satisfaction at a glance. Apdex scores distill response times into a single meaningful number.
Get notified where you already work. Route alerts to an email address or any HTTP endpoint via webhooks.
Give your users a branded status page with real-time uptime data. No extra setup required.
Add a URL and be done. No agents to install, no YAML to write, no config files to manage.
Four steps. Under a minute.
Enter the URL you want to monitor. Probes start to fire every minute.
Probes run from San Francisco, New York City, and Amsterdam. Each captures full connection timings.
Response times, uptime percentage, Apdex scores, and timing breakdowns in a clean dashboard.
Set up email or webhook alerts and get notified the moment a probe detects downtime or degraded performance.
Each probe captures six distinct timing phases so you know exactly where latency lives.
Time spent resolving the hostname to an IP address via DNS. A slow lookup often points to a misconfigured or distant DNS resolver.
The TCP handshake — the time from sending SYN to receiving SYN-ACK. This reflects the raw network distance between the probe and your server.
Time to negotiate the TLS session after TCP connects. Certificate chain depth, cipher selection, and OCSP stapling all affect this.
Time to first byte — the wait between sending the request and receiving the first byte of the response. This is your server's think time.
Time to download the full response body after the first byte arrives. Large payloads or slow transfer rates show up here.
The complete round trip — DNS through response body. This is what your users actually experience end to end.
Start free for 14 days. Pay to stay when you find value.
Most monitoring tools are built for enterprise ops teams. Probes is built for developers and small teams who ship their own infrastructure.
| Probes | UptimeRobot | Statuspage | Cronitor | |
|---|---|---|---|---|
| Multi-region probing | ✓ | ✓ | ✓ | ✓ |
| Full timing breakdown | ✓ | ✕ | ✕ | ✕ |
| Apdex scoring | ✓ | ✕ | ✕ | ✕ |
| Status pages included | ✓ | Paid add-on | ✓ | ✓ |
| Unlimited team members | ✓ | ✕ | ✕ | ✕ |
| Starts at | Free / $5 | Free / $7 | $29 | Free / $7 |
Solo developers, indie hackers, small teams, and anyone running a SaaS, API, or marketing site who wants to know it's up and fast without wading through enterprise dashboards or paying enterprise prices. If you've outgrown a cURL in a cron job but don't need a $300/mo observability platform, Probes is for you.
No credit card required. Free 14-day trial.
Get Started Free!