Free monitoring that finds what's actually wrong.

Uptime, SSL, DNS, security headers and blacklist checks for your domains — in one place, with the problems surfaced, not buried. Add a site and see where you stand in about a minute.

Start free — check your first site → No card · up to 5 domains · ~60 seconds

It tells you what's wrong — not just whether you're up

Most monitors ping your homepage and call it a day. Pulse runs the checks that actually catch trouble, and puts the findings front and centre.

Certificates expiringCatch an SSL cert before it lapses and throws a browser warning at your customers.
Security headers missingHSTS, CSP, X-Frame-Options — scored, with the gaps named so they're easy to fix.
Email auth gapsNo SPF or DMARC means your domain is spoofable. Pulse flags it on every domain you add.
Blacklisted IPsChecked against ~58 reputation lists, so a listing doesn't quietly tank your deliverability.
Exposed portsFind services facing the internet that shouldn't be — before someone else does.
Real downtimeUptime checks with a straight "site is down" email the moment it happens.

Built for the people who keep sites running

Agencies 5–500 sites

You host client work and inherited the server responsibility along the way. Pulse watches every client site in one place and flags what's slipping — expiring certs, missing headers, a site going down — before the client emails you.

SaaS teams no dedicated SRE

Your product has to stay up, but the boring-but-load-bearing checks live in one or two people's heads. Pulse keeps an eye on uptime, certs, DNS and headers and tells you the moment something breaks — so you're not hearing it from customers.

Add your first site — free.

No card, up to five domains, and your first findings in about a minute.

Start free →