How to Monitor 50 Websites Without Paying Enterprise Prices

MAR 16, 2026 - Written by Yves SoeteBlacksight LLC — monitor multiple sites from one dashboard atscanner.blacksight.io

Agencies, small hosting providers, and anyone running a portfolio of client or project sites hit the same wall: the monitoring tools that are cheap at one site get expensive fast at 50. The enterprise tier of most uptime tools kicks in around 10 to 20 monitors and climbs quickly from there. This is a practical breakdown of what we have seen actually work for the 10-to-100 site bracket, where you need broad coverage without a six-figure monitoring budget.

The pricing wall nobody warns you about

Most dedicated uptime tools have a cheap entry tier (under $10/mo for 10 to 20 monitors) and then a large jump to the next tier. UptimeRobot's solo plan caps at a dozen monitors before you need the Team plan. Pingdom's entry tier is 10 monitors for $15/mo, and scaling up past that means quickly hitting Pro plans at $40 to $80/mo. Better Stack has a Free tier and then jumps to $269/mo Standard. For a 50-site operation, you are looking at $40 to $80 per month per tool minimum, sometimes much more, for what is functionally the same monitoring capability as the cheap tier.

The math gets worse when you also want SSL monitoring, vulnerability scanning, and security-headers checks on those same 50 sites. Three tools at $50 each is $150/mo. Four tools is $200. For an agency with 10-percent margins on client retainers, that is meaningful.

Strategy 1: Self-host an open-source monitor

Uptime Kuma is the most popular open-source uptime monitor. Free, reasonably full-featured, and runs on a $5/mo VPS or a spare home server. For pure uptime, it covers the basics — HTTP checks, keyword checks, status-code checks, a simple status page, and notifications via 90+ integrations. For 50 sites it handles the volume easily.

The tax is operational. You run it. You maintain it. You upgrade it. You patch the host. You are responsible for the reliability of the monitor itself — which is ironic when the monitor is supposed to catch unreliability elsewhere. Most agencies start with Uptime Kuma and either stay because the operational burden is acceptable or migrate away when it breaks at an inconvenient moment.

The other cost: Uptime Kuma is uptime-only. No security scanning, no SSL expiry alerts that go 30/14/3 days ahead, no vulnerability checks. You still need the rest of the stack.

Strategy 2: Bundle uptime with security in one tool

The economic argument for consolidating is strongest at the portfolio scale. A tool that does uptime plus SSL plus headers plus vulnerability scanning plus leaked-credential monitoring at a flat per-site price beats the four-tool stack on both price and operational cost. You have one dashboard, one integration into your ticketing system, one alert channel per severity.

BlackSight's Plus plan at $29/mo and Pro plan at $89/mo are positioned for exactly this case. Plus covers a small portfolio (3 subdomains, 3 collaborators, unlimited scans). Pro handles 10 subdomains and 10 collaborators, which maps well to a small agency. Above that, Enterprise pricing enters the picture, but the per-site economics usually stay well under the equivalent stack of dedicated tools.

We built this path deliberately — see BlackSight's uptime + security bundle — because the fragmentation in the market was genuinely wasteful for small agencies.

Strategy 3: Custom cron + Discord webhook

For a small portfolio and a developer with an hour to spare, a cron job that pings each URL and posts failures to a Discord or Slack webhook covers 80 percent of uptime value. No SaaS dependency, no per-monitor cost, total control.

The missing pieces are: multi-region checking (single-point-of-failure for your monitor), false-positive suppression (you will get pinged for every transient network blip), escalation logic (pages the right person at the right time), and all the security checks that a pure uptime ping cannot do.

This strategy works for hobby-scale or for pre-launch projects. It usually fails somewhere between the tenth site and the first 3am incident that your cron missed because the VPS itself was down.

What actually matters at 50-site scale

Three properties are more valuable than any specific feature. Single-pane visibility: one dashboard that shows the state of every site, not 50 dashboards. Bulk configuration: adding a new site should be two minutes, not twenty. And white-label or client-facing reporting: if you are an agency, your clients should be able to see their own uptime without having accounts in your monitoring tool.

Any tool that nails those three at a flat-per-site price is usable at portfolio scale. Most tools nail one and miss the other two, which is why the market feels fragmented for this use case.