Your customer should never be the one who tells you the site is down.
Uptime, SSL, and server monitoring in one flat-priced dashboard, so you know the second anything breaks. Everything the big tools charge a fortune for, at a price built for MSPs, home labs, and small teams.
Enterprise monitoring. Without the enterprise invoice.
Datadog, Pingdom, and the rest meter you per host, per check, and per seat. Great math for a bank. Punishing for a home lab, an MSP watching dozens of client sites, or a team of five. Ensju is flat-priced and generous: the monitoring that matters, at a price that makes sense.
Flat monthly plans
No per-host or per-check metering. Your bill never surprises you.
A genuinely free tier
10 monitors, heartbeats and a server, forever. No trial countdown, no card.
Every channel, every plan
Slack, Discord, Telegram, Signal and webhooks aren't an upsell.
One dashboard for everything you run
Your sites, your certificates, and the servers behind them, watched around the clock.
Website, API & .onion uptime
HTTP, TCP, DNS, ICMP, plus Tor .onion. Checks as fast as every 30 seconds, with keyword, status-code and JSON assertions, and multi-step checks that log in and walk a user journey on Pro and up.
SSL & domain expiry
Every HTTPS monitor tracks cert expiry automatically, and domain monitoring watches registration expiry plus SPF, DMARC and DKIM, so nothing lapses quietly.
Cron jobs & backups
Heartbeats catch the job that silently stops running. Your backup, cron or worker pings Ensju, and you hear about it the moment a ping is late or reports a failure.
Servers, containers & disks
A tiny outbound-only agent reports CPU, memory, disk, network and load, plus Docker containers and, if you opt in, ZFS, SMART and UPS health. It forecasts when a disk will fill, and updates itself from the dashboard.
Your vendors' outages, too
Track the status pages of Stripe, GitHub, Cloudflare and the rest. When one has an incident, your dashboard names it as a possible cause before a customer has to.
Alerts that reach the right person
Email, Slack, Discord, Telegram, Signal, webhooks and push, routed per monitor. Quiet hours, snooze and maintenance windows cut the noise, and escalation policies (Homelab and up) page the next person if nobody answers.
Multi-region probing
Watch each monitor from up to 5 regions at once. A smart down-rule tells a real outage from a regional blip, so you're not woken for nothing.
Status pages & badges
A polished status page out of the box, on your own domain or fully white-labelled. Uptime history, incidents, maintenance and email subscribers, plus uptime badges for your README.
SLA targets you can prove
Set an uptime target per monitor, watch the error budget in incident minutes, and get a MET or MISSED verdict for each client every month. Pro and up.
A dashboard that's live
Lists, details, and charts update in real time. No refreshing, no wondering whether what you're looking at is current.
Mobile companion app (coming soon)
iOS + Android apps on the same account, your stuff's status in your pocket — view-only for your monitoring data, with push alerts when something breaks. The dashboard already shines on mobile in the meantime.
Ask your AI assistant
Connect Claude, ChatGPT, or Cursor over MCP and ask "is anything down" or "which server is low on disk". Read-only, signed in as you, on every paid plan.
See it in action
Not a mockup. This is the actual dashboard you get on day one, live-updating and dark by default.
Every check, in depth
Open any monitor for the full picture: uptime across 24 hours, 7 and 30 days, the SSL certificate counting down to expiry, and response time plotted per region. A majority-rule roll-up tells a real outage from a single flaky path.
One agent. Every box.
Ubuntu, FreeBSD, macOS, OPNsense — one lightweight agent watches them all. Group and filter by client or environment, and see at a glance which hosts are online, which need attention, and which are due an update.
Infrastructure metrics, at a glance
CPU, memory, disk, network, and load — live tiles over trend charts, plus host facts and service health. The agent is outbound-only, so it reports from behind NAT and strict firewalls with no ports to open.
Your dashboard, in your pocket
The Ensju companion app puts every monitor, server, and alert on your phone — view-only for your monitoring data, on the same account, and it registers itself for push so an outage reaches you. The web dashboard already shines on mobile in the meantime.
Every org at a glance
Up, down, and degraded counts, servers online, and recent activity — the whole account in one glance.
Drill into any monitor
Uptime history, the SSL expiry countdown, and all five probe regions — in the palm of your hand.
Server metrics, live
CPU, memory, disk, network, and load, with trend charts that refresh as you watch.
Your infrastructure is nobody's business but yours
Monitoring means handing a tool a map of everything you run. We treat that map the way you'd want us to.
We monitor it. We don't monetize it
Funded by subscriptions, not ads. Your monitors, metrics, and logs are never sold, profiled, or fed to an ad network.
Credentials encrypted with AES-256
The secrets you hand us (Slack tokens, webhook URLs) are encrypted at rest, never sitting in a plain database column.
Encrypted in transit
Every connection runs over TLS. Nothing about your stack crosses the public internet in the clear.
The agent calls out, never in
Outbound calls only. No inbound ports, no port forwarding, no VPN. It watches servers behind NAT or a strict firewall, runs unprivileged, and installs signed updates with automatic rollback.
Want the longer answer: probes, the agent, the dispatch pipeline, the architecture diagram? How Ensju works →
Made for the rest of us
If the big platforms quoted you a number that made you laugh, Ensju is for you.
MSPs & IT consultants
Turn monitoring into a profit line: win clients with it, resell it at 95%+ margin, and prove the uptime you're paid to deliver.
See Ensju for MSPs →
Small businesses & startups
Know before your customers do, without hiring a dedicated SRE.
Home labs & self-hosters
Keep an eye on everything in the rack without signing up for a corporate budget.
Indie devs & makers
Ship it, then sleep. Ensju keeps watch while you build the next thing.
Who's behind it
Built by an MSP, for the clients it already monitors
Ensju is built by Robby, 26 years in enterprise IT, up to tech operations director at a Fortune 50 retailer spanning 8,000+ locations. He runs his own MSP, 17 Solutions, and builds monitoring for people who don’t trust the cloud: run on infrastructure he owns down to the BGP announcement, reachable over Tor, never mined.
Built for the privacy-first crowd
Yes, we monitor your Tor .onion services
Point Ensju at a Tor hidden service and it's checked over Tor like any other monitor (uptime, response time, alerts) with no proxy to run yourself. The big platforms can't reach onion services at all. We connect as a Tor client only (never a relay or exit node), so your .onion lives on the same dashboard as everything else.
Switching from another tool?
We've outgrown "cheapest pinger." See how Ensju's breadth, flat pricing, and privacy stack up: honest tables, real numbers.
Here's what you get.
The monitoring itself is on every plan, Free included: uptime, SSL, heartbeats, vendor status, server health and alerts to every channel above. Paid plans add room to grow, faster checks, longer history, and the tools teams and MSPs pay for.
Free
$0/mo
10 uptime monitors · 1 server agent · 7-day history
Homelab
$10/mo
25 uptime monitors · 5 server agents · 30-day history
Pro
$40/mo
100 uptime monitors · 25 server agents · 90-day history
The no-risk guarantee
30 days. Money back. No interrogation.
Run any paid plan for a full month. If Ensju isn't earning its keep, reply to any email from us and we'll refund every cent. No forms to fill out, no exit interview, no hard feelings. And you can start on the free plan, so you don't even have to take our word for it first.
Common questions
- Is there really a free plan, or is it a trial?
- A real free plan, forever. 10 uptime monitors, 1 server agent, 5 heartbeats, 3 vendor dependencies, 7 days of history, and alerts, no credit card and no countdown. Plenty of home labs and side projects never need to pay a cent.
- I'm an MSP — can I resell Ensju to my clients?
- Yes — that's the model we lead with. The MSP plan is $125/mo for up to 500 monitors, 50 client status pages on your own domains, and 100 server agents. Across 40 clients that's about $3 per client, and MSPs commonly productize monitoring and reporting at $99-299 per client per month. The full per-client math is on our MSP page. See Ensju for MSPs →
- How is Ensju cheaper than Datadog or Pingdom?
- Those tools meter you per host, per check, and per seat, predictable for an enterprise, brutal for everyone smaller. Ensju charges one flat monthly price. The same monitoring, a bill you can actually predict.
- Is there a money-back guarantee?
- Yes. Every paid plan is covered by a 30-day money-back guarantee. If Ensju isn't earning its keep, reply to any email from us and we refund every cent, no forms, no exit interview.
- Do you sell or mine my data?
- Never. Ensju is funded by subscriptions, not advertising. Your monitors, metrics, and logs are yours, never sold, never profiled, never handed to an ad network. Channel credentials are encrypted with AES-256.
- What can Ensju monitor?
- Websites and APIs over HTTP, TCP, DNS, and ICMP, including multi-step checks that log in and walk a user journey (Pro and up); Tor .onion services; SSL/TLS certificate expiry; domain registration expiry and email DNS (SPF, DMARC, DKIM); cron jobs, backups and workers through heartbeats; the public status pages of vendors you depend on, like Stripe, GitHub and Cloudflare; and full server metrics (CPU, memory, disk, network, load, service health, Docker containers, and optionally ZFS, SMART and UPS) via a lightweight agent.
- How do I keep alerts from turning into noise?
- Quiet hours mute a channel on a schedule, a snooze mutes one monitor or server for a few hours, pausing a server stops its alerts until you resume it, and maintenance windows silence everything on a status page during planned work. Alerts fire on real state changes only, and when a vendor you track has an outage, the dashboard says so, so you know it isn't you.
- Can I ask Claude or ChatGPT about my monitors?
- Yes. Ensju has a built-in MCP server, so Claude, ChatGPT, Cursor, or any MCP-capable assistant can answer questions like "is anything down right now" or "what was the uptime of api.example.com this month" using your own Ensju sign-in. It is read-only and included on every paid plan.
- Can you monitor Tor (.onion) services?
- Yes, and almost no other monitoring service can. Add a .onion URL as an HTTP monitor and Ensju checks it over the Tor network, with the same uptime and response-time tracking as any other monitor. There is no proxy to run on your side, and we connect as a Tor client only, never a relay or exit node.
- How long does setup take?
- Minutes. Paste a URL for uptime and SSL checks, or run one command to add a server. No YAML to write, no collectors to babysit, no onboarding call.
- Do I need to open a firewall port?
- No. The server agent only makes outbound HTTPS calls. It never accepts inbound connections, so it works behind NAT, CGNAT, and strict firewalls with zero configuration. Uptime checks run from our side against your public URLs; nothing ever needs to reach into your network.
- Why is it called "Ensju"?
- Ensju is Swedish (en sju, literally "one seven", or 17), a nod to our Swedish roots and to 17 Solutions, the company behind Ensju. Say it "en-SHOO": the sju uses the distinctive Swedish "sj"-sound, a soft rush of air somewhere between an English "sh" and "h".
Learn monitoring, for free
Practical, vendor-neutral guides on uptime, SSL, alerting, and status pages. Informative first — useful whether or not you ever use Ensju.
What Is Uptime Monitoring? A Practical Guide
How the checks work, what you can watch, and how to set it up so you hear about an outage before your customers do.
Jul 8, 2026
The Low-Cost Homelab Monitoring Stack
Watch the whole rack — hosts, services, uplink, and backups — without opening a single port or signing up for a corporate budget.
Jul 1, 2026
Monitoring Cron Jobs & Workers with Heartbeats
The backup you think is running might not be. Here's how a dead man's switch catches the jobs that fail without making a sound.
Jun 30, 2026
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Prefer it all in one place? Get the free Web Monitoring Playbook (PDF) →
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