For freelancers & agency owners
Know a client site is down before the client emails.
Holter watches every client site, certificate, domain, and status page from one dashboard, so you can protect the retainer, the relationship, and your reputation.
This is probably you if…
- You maintain multiple client websites.
- Clients expect you to know when their site is broken.
- You are responsible for uptime, SSL, DNS, domains, or support retainers.
- You do not want a separate monitoring login per client.
- You need proof that you are watching the sites you maintain.
- You want to hear about downtime before the client does.
Your world
Client uptime is reputation management.
When you run sites for other people, downtime is not just technical. It is relational. A client does not care which host, plugin, deploy, DNS setting, or certificate renewal caused the problem. They care that their site is down — and whether you knew first.
If you are selling maintenance, care plans, hosting, retainers, or ongoing support, monitoring is part of the promise. Holter gives you one place to watch every client site and enough status-page tooling to look professional when something breaks.
The client-site problems that become your problem
The first monitors for client maintenance
- 01 Homepage uptime for each client site.
- 02 SSL certificate.
- 03 Domain expiry / DNS.
- 04 Important form, checkout, booking, or API endpoint.
- 05 Per-client status page for higher-value clients.
The goal is not to build an enterprise NOC. The goal is to know first, respond calmly, and prove that the client's site is being watched.
Built for the person responsible for the client relationship
If clients call you when something breaks, you are the buyer. Holter is priced and packaged so a freelancer or small agency owner can add it to a maintenance workflow without committee approval.
You need a client-site watchlist, not an observability department.
Most client sites do not need traces, hosts, agents, and dashboards. They need uptime, cert/domain checks, alert routing, and a clear status page. Holter gives you the layer clients actually feel.
What changes after setup
- ✓ You know before the client emails.
- ✓ You can show monitoring as part of the maintenance value.
- ✓ You can segment monitors and status pages by client.
- ✓ You reduce avoidable trust damage from expired certs and DNS issues.
- ✓ You have a calm place to point clients during incidents.
The monitors for you
Start with the ones that fit your situation. Each is set up in minutes.
Monitor every client site from one dashboard.
Freelancers and agencies: watch all your client sites, certs, and domains in one place, and get alerted the mo...
Watch my client sitesUptime monitoring that tells you before users do.
Monitor sites, APIs, certificates, redirects, DNS, and TCP ports. Route alerts to the right channel and publis...
Start monitoring freeA status page powered by real monitors.
Publish a branded public page, connect it to your monitors, and let incidents update it automatically.
Create a status pageCheck response time from global probe locations.
See how your app responds from selected cities around the world. Use Holter's recommended global set or choose...
See global monitoringQuestions, answered
Yes. Holter checks each site from the public internet, so it does not matter which host, stack, or CMS a client site runs on — you only need the URL.
No. There's nothing to install on a client's server. Holter watches from the outside, so you can monitor sites you don't host.
Yes — a branded status page per client, on their own domain on Pro, updated automatically from that client's monitors.
Free covers up to 5 monitors; Pro raises it to 100 and Business to 500 — enough for a growing book of client sites.
Yes. Route alerts to email, Slack, Discord, or a webhook, so you and anyone you work with hear it the moment a client site drops.
Yes — monitoring is part of the maintenance promise. Holter gives you one dashboard for every client site plus per-client status pages to show the value.
Know a client site is down before the client emails.
Free for 5 monitors. No credit card, no ops team, no sales call.
Watch my client sites