Roundup

Best website monitoring for agencies

A fair, agency-focused roundup. We rank on the breadth of checks, whether you can put a branded report in front of a client, how the pricing scales across a portfolio and how easy it is to live in day to day.

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Agencies need something different from a single uptime monitor. The job is to keep a portfolio of client sites healthy and to prove it, ideally with a report a client reads. We have ranked the main options on that basis, and we have included Janitor because it is built for exactly this. Where a rival is stronger, we say so.

All pricing was checked against each provider live in June 2026. Prices move, so treat figures as "at the time of writing" and check the provider before you buy.

How we ranked

The criteria

Breadth of checks across uptime, SSL, DNS, SEO, security, privacy and performance
Client reporting, especially branded white-label reports
How pricing scales across a portfolio of client sites
Day-to-day usability and alerting

The ranking

The options, ranked

Janitor

Best for branded client reports From $15/mo, 30-day trial

Around two dozen checks across seven categories, rolled into a white-label PDF report with a 0 to 100 score and prioritised fixes. Every feature is on every plan and it works on any stack. It has no public status pages and its performance check is a page-weight budget rather than full Lighthouse, so it is not the tool for deep performance work.

Best for: Agencies and freelancers who bill a retainer and need a branded monthly report.

Oh Dear

Best all-in-one with status pages From €13/mo, 10-day trial

A polished monitor with uptime, SSL, broken links, DNS, cron and Lighthouse, plus public status pages with subscriber notifications and a reseller programme. Every feature on every plan. The client-facing output is a status page and email report rather than a branded PDF.

Best for: Teams that want all-in-one health and a public status page.

Little Warden

Best for SEO change detection From £24.99/mo, 40-day trial

The specialist for catching changes to titles, redirects, robots.txt and canonicals, with custom XPath checks and Search Console sync. Less focused on uptime and broad health, more on knowing the instant a page changes.

Best for: SEO-led agencies watching key pages closely.

StatusCake

Best free uptime tier Free, paid from £12.49/mo

Solid uptime, page speed, domain and SSL monitoring with a usable free tier and fast intervals on paid plans. Narrower than a full health platform and not built around a client report.

Best for: Agencies wanting reliable uptime and speed on a budget.

UptimeRobot

Best generous free plan Free, paid from $9/mo

A popular uptime monitor with 50 free monitors, SSL and domain expiry checks and simple status pages. It is uptime-first, so it does not cover SEO, security, privacy or branded client reporting.

Best for: Light uptime monitoring at low or no cost.

WP Umbrella / ManageWP

Best for WordPress care plans From €1.99/site/mo, or free core

WordPress-only tools that add backups, updates and maintenance on top of monitoring and reports. Strong if your whole portfolio is WordPress, but they cannot watch sites on other stacks.

Best for: All-WordPress agencies that also want maintenance workflows.

Keep reading

Branded client reports See what the white-label PDF report contains. Janitor for agencies Website monitoring built around the retainer. Best white-label website monitoring Best client reporting tools

FAQ

Roundup FAQ

What is the best website monitoring tool for an agency?

It depends on the job. For a branded client report across the whole site, Janitor is built for it. For all-in-one health with status pages, Oh Dear is strong. For SEO change detection, Little Warden. For free uptime, UptimeRobot or StatusCake. For WordPress maintenance, WP Umbrella or ManageWP.

What should agencies look for that solo developers do not?

Branded client reporting, pricing that scales across many sites, and breadth across uptime, SSL, DNS, SEO, security and privacy so one tool covers a client review. A single uptime monitor rarely covers the whole brief.

Is the pricing here current?

It was verified live in June 2026, but prices change. Treat every figure as at the time of writing and check the provider before you buy.