Everything with an address.

A monitor for each thing that can break, and one timeline that puts what is down now beside what expires next.

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The board

The overview over sample data. Press LAMP TEST; switch the view.

Active06

Alarm: 01
Supervisory: 02
Trouble: 00
Normal: 03
Unlit: 00

View

Acme Retail

06Sample data

DownHTTP

Checkout API

api.acme.example/health

Down47 min

checked 1 min ago

Expiring soonCert

mail.example.com

mail.example.com

11d left10 Oct 2026

checked 40 min ago

UpTCP

VPN gateway

vpn.office.example

31ms

checked 2 min ago

OKDomain

example.com

example.com

40d left08 Nov 2026

checked 9 h ago

UpDNS

MX example.com

example.com

18ms

checked 4 min ago

DegradedHTTP

Storefront

shop.acme.example

1840msslow for 22 min

checked 1 min ago

What gets watched

Uptime monitoringHTTP · TCP · Ping

Websites, APIs and anything that answers on a port, checked every minute from up to five places, with a failure confirmed before anyone is paged.FreeProBusiness

Certificate monitoringCERT

Every certificate hostnag can reach is watched for expiry, a swapped chain and a renewal that should already have happened; the ones it cannot reach get a URL to report to instead.FreeProBusiness

Domain monitoringDOMAIN

Every domain's registration watched for lapsing, a registry hold or a blocked renewal, plus whether its nameservers answer for it and agree, and whether its DNSSEC signatures are still fresh.FreeProBusiness

DNS monitoringDNS

The records that point people and mail at your systems, watched for drift from the answer you told hostnag to expect.FreeProBusiness

Mail health monitoringMAIL

The records that keep mail deliverable, plus up to 8 sending addresses checked against the blocklists that get mail rejected.FreeProBusiness

Link monitoringLINK

An office or ISP connection watched from both ends, so a filtered port and a dead line never read the same.FreeProBusiness

Heartbeat monitoringHEARTBEAT

A minted URL for each job that runs on its own schedule, and an alert when a run does not call it in time.FreeProBusiness

Vendor status monitoringVENDOR

Your vendors' incidents on the same board as your own, read from the status pages they already publish.FreeProBusiness

Each alert goes to the channels its severity calls for, waits out quiet hours and maintenance, and escalates until someone acknowledges it.FreeProBusiness

Status pagesSTATUS PAGE

A public page your customers read for themselves. Each tracked row carries its uptime strip and response time, and a mail, certificate or domain row a day by day health strip. Incidents you write sit beside the ones the checks raise, with planned maintenance, a feed, a JSON any status reader speaks and a badge for the README.FreeProBusiness

A plain script on a box in your network runs the same checks from inside, so private hosts, office lines and internal certificates get watched too. One line sets it up.FreeProBusiness

Discovery and subdomain watchDISCOVER

Every name under a domain, found in its own DNS, its homepage and the names people usually use, each judged live, gone or pointing nowhere, with the ones anyone could claim listed first. A subdomain watch looks again every day and alerts on what changed.FreeProBusiness

Tools and assessmentsTOOLS

Any check run once from one address box, and a client review or an audit kept as an assessment: your notes and verdicts, run again for a before and after, printed, shared or exported.FreeProBusiness

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