Developer tools / Uptime monitoring14 tools
Best uptime monitoring tools
Get alerted when a site or service goes down. Facts come from each tool's own pages, and every score says where it comes from. How we rank
- Tools
- 14
- Researched
- 10
- Free option
- 7
- Only listed
- 4
Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.
Ranked by signals we can measure or quote: website health, the facts each tool's own pages state, and community discussion. Nothing here has been hands-on tested yet, so this is not a quality test. How the signals rank works
Want two of these head to head? Compare tools side by side.
Details and sources
- Free tier
- Hobby plan costs $0: 10 uptime monitors, up to 1,000 browser check runs and 10,000 API check runs per month (hard-capped), 6 locations, 2-minute maximum frequency, 1 user, 1 dashboard. Email, Slack and webhook alerts. Raw data kept 7 days.
- Paid plan
- Prices in $ (currency not named). Starter: Detect (uptime and synthetic) $24/month billed annually. Team: Detect $64/month billed annually. Status pages, AI root cause and Platform bundles are priced separately. Enterprise is a custom quote. The page says save up to 20% on annual billing.
- Signup
- Sign-up is through a Get Started link to the signup page; the page does not explicitly say an account is required. The FAQ says no credit card is needed to get started.
- Watermark
- Not applicable.
- Where files go
- Data may be processed in the United States. Test results are kept by plan: Hobby and Starter 7 days raw and 30 days aggregated; Team 30 days raw and 1 year aggregated; Enterprise 180 days raw and 25 months aggregated. No retention period is given for account data.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Hobbyist plan, $0 per month: 20 jobs to monitor, 100 log entries per job.
- Paid plan
- Billed monthly: Supporter $5, Business $20 (100 jobs), Business Plus $80 (1,000 jobs). Annual billing saves 20%: Business $192 per year, Business Plus $768 per year.
- Signup
- Not stated.
- Watermark
- Not applicable.
- Where files go
- Privacy policy says Hetzner hosts the service and stores data; AWS stores encrypted database backups. Backups are kept up to 2 months. Inactive accounts (over a year) are closed automatically after a notice. Users can usually delete data via account settings.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Free for life: 15 uptime monitors, 15 server monitors, 4 of 12 monitoring locations, 15-day activity log, 1,000 API calls per month. You must log in at least once every 90 days to keep it.
- Paid plan
- Professional $9.95/month or $99.95/year; Business $19.95/month or $199.95/year; Enterprise $49.95/month or $499.95/year (USD).
- Signup
- Account required (free plan is started by registering).
- Watermark
- Free plan has partial white label: the HetrixTools brand name appears in the page title and footer. A watermark is not stated.
- Where files go
- Account details, monitors, contacts and API request contents are stored on the platform. Location of servers not stated. Activity log IP addresses kept 30 days; MCP request logs deleted within 7 days; no retention period stated for account and monitor data.
From the tool's own pages, checked 2026-11-01. Sources: Uptime monitor pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Pingdom offers a 30-day free trial that is fully functional. The page says: “START 30-DAY FREE TRIAL Fully Functional for 30 days.”
- Paid plan
- Pingdom offers customizable subscriptions for Synthetic Monitoring and Real User Monitoring with annual or monthly payment options. The page says: “Customize your Pingdom subscription. Mix and match capabilities to fit your monitoring needs.. Annual Payment . Monthly Payment.”
- Signup
- A free trial requires starting a trial, which implies a signup process. The page says: “START 30-DAY FREE TRIAL Fully Functional for 30 days.”
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-08. Sources: Home, Pricing. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Details and sources
- Free tier
- Starter plan is free: 15 monitors, 2-minute checks, email alerts, 5 team members, 2 on-call members, a public status page, no custom domain, 200 subscribers.
- Paid plan
- Pro from $20/month (yearly billing 25% off, paid up front): 50 monitors, 30-second checks, SMS alerts, 1+ custom domain, 5,000 subscribers. Business price not stated. Enterprise is custom.
- Signup
- Not stated; page has Sign up free calls to action.
- Watermark
- Not stated.
- Where files go
- Data stored primarily in the United States; service providers may process it in other countries. After account deletion, data is removed from live systems within 30 days and from backups within 60 days. Billing records kept as tax law requires, typically up to 7 years.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Free plan at $0/month for personal projects: 10 monitors and heartbeats (shared), 1 status page, Slack and email alerts. Check frequency for the free tier is not listed.
- Paid plan
- Uptime monitoring includes 10 monitors; each extra block of 50 monitors is $25/month billed monthly or $21/month billed yearly. Prices in $ (currency not named). Other paid plans were not read.
- Signup
- Not stated. The privacy policy says accounts are created from information given at registration.
- Watermark
- Not applicable.
- Where files go
- Privacy policy says personal data is processed primarily in the European Union and may be transferred outside the EEA with safeguards. No specific retention period is given; data is kept where legally permitted and necessary. Erasure requests can be emailed.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Free plan (Hacker), $0: 5 monitors, email and Slack alerts, one basic status page with 50 subscribers, 100,000 web analytics and error events, 1 user, fastest check every 5 minutes. No SMS alerts or browser checks.
- Paid plan
- Business is billed monthly with no contract: $2 per month per monitor plus $5 per month per user, after a 14-day free trial. Enterprise starts from $6,000 per year.
- Signup
- Not stated.
- Watermark
- Not applicable.
- Where files go
- Privacy policy says data may be transferred to and kept on computers outside your country; the sub-processors listed are in the United States. Data is kept while the account is active; deleted data may remain in backups for a reasonable period. Erasure can be requested by email.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- NodePing offers a free 15-day trial. The page says: “Free 15-day trial - Start Now No credit card required.”
- Paid plan
- Plans start at $25 per month to monitor 200 services at 1 minute intervals. The page says: “Monitor 200 services at 1 minute intervals all month for only $25. All our plans include unlimited international SMS notifications so your costs are predictable, no matter how many alerts you need.”
- Signup
- An account signup is required to use the service. The page says: “Log in . . Log in . Sign up . . . Uptime Monitoring for Websites and Services.”
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-08. Sources: Home. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Details and sources
- Free tier
- Not stated.
- Paid plan
- Pricing information for Datadog is available for viewing on their platform. The page says: “The integrated platform for monitoring & security. Observability . Security . Digital Experience . Software Delivery . Service Management . AI . Platform Capabilities . View pricing.”
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-08. Sources: Home. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Details and sources
- Free tier
- Free plan at $0 per month: 10 uptime monitors (5-minute interval), 1 page speed monitor, 1 domain monitor, 1 SSL monitor, alerts via integrations.
- Paid plan
- Superior $20.41 or $24.49 per month; Business $66.66 or $79.99 per month (page has Annual and Monthly options but does not say which price is which). Enterprise is custom. 7-day free trial of paid plans, no card required. Currency not stated on the pricing page.
- Signup
- Not stated.
- Watermark
- Not applicable.
- Where files go
- Privacy policy says personal data is primarily stored and processed in the United Kingdom, with some third-party providers possibly outside the UK. Account data is kept while the account is active. Retention of monitoring results not stated.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.
Answers come from each tool's own pages (“Unclear” means they do not say). Tick “Compare” on two to four tools to read them side by side.
Also listed (4, not yet tested)
Each of these answered when we visited its site. We have not tested them or recorded facts, so they are in alphabetical order, not ranked.
- Site24x7Open
Site24x7 offers both free & paid monitoring services for your entire IT environment.
- Updown.ioOpen
ϟ Website monitoring — beautiful, simple and inexpensive.
- Uptime KumaOpen
A self-hosted monitoring tool
- UptimeRobotOpen
Start monitoring in 30 seconds. Use advanced SSL, keyword and cron monitoring. Get notified by email, SMS, Slack and more. Get 50 monitors for FREE!
Other Developer tools rankings
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