Website Downtime Monitoring United States

Website downtime alerts and uptime monitoring in United States and across the world.

Downtime notifications to email, SMS and Slack.

Response time monitoring, uptime stats and downtime logs.

Up to 60 websites monitored completely free.

Not in United States?

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United States Services

Free website monitoring services:


Response time monitoring:


Uptime monitoring & stats:


Downtime alerts via email & Slack:


SMS downtime alerts:


Pro website monitoring services:


54,912 downtimes logged in the last 90 days


Latest News

Website Monitoring: Cheap vs Free

22 May 2019

What's the best website monitoring option? Micro Pro Plans verses the Free Plan ... read more

Improvements & Bugfixes

09 May 2019

Reduced memory use of clean-up scripts, automation of free SMS credits upon sign-up and... read more

Website Uptime Monitoring

Websites checked every minute or every 3 minutes.

View monitors in real time: see all your websites at a glance or view individual websites.

Add monitors individually or upload websites in bulk - start monitoring in seconds.

website uptime and downtime monitoring
Slack downtime alert notification

Website Downtime Alerts

Downtime alerts via email, Slack and SMS.

Receive alerts the instant a website is detected down, or... set custom alerts so that notifications are only sent if a site stays down for a time.

Rate limit alerts by setting the maximum number of downtime alerts that can be sent per hour.

Response Time Monitoring

Keep track of website speed by monitoring response time.

The time for the web server to respond is recorded every time an uptime check is made.

View graphs of individual response times for 24 hours, hourly average response times for 7 days, and daily average response times for 2 years.

response time monitoring graph
website content monitoring records

Website Content Monitoring

Get notified if the content of your website changes unexpectedly.

Catch on-page errors, database errors & hacked websites: more details.

Downtime Monkey checks that your webpage contains the correct keyword phrase. If it doesn't a downtime is logged and alerts are sent.

Uptime Stats & Downtime Logs

View the uptime statistics for every website that you monitor.

See uptime stats for 24 hours, 7 days, 30 days, 90 days, 1 year and 2 years at a glance.

Access downtime records of individual downtimes for up to 2 years.

Downtime records include the timestamp, the duration of downtime, the response code from the server and a short explanation to help you troubleshoot the problem.

website uptime statistics

Get Started

With our free account you can monitor up to 60 websites and each website is checked every 3 minutes.

It's completely free so why not start now - you'll be up and running in less than a minute!