Dotcom-Monitor

Website & Web Application Monitoring Dotcom-Monitor instantly alerts you when your website has problems. Detailed diagnostics enable you to take quick corrective...

Commercial Web

PushMon

PushMon is a new kind of cloud-based monitoring system. Instead of checking public facing servers on a regular basis, PushMon will wait for pings from the objects being...

Freemium Web

Binary Canary

Website monitoring service that offers a comprehensive free plan with: * escalation levels (if a first-responder contact doesn't acknowledge the downtime, another...

Commercial

WatchMouse

Founded in February 2002, WatchMouse is a global industry leader in self-service website and application performance monitoring. WatchMouse product tests the...

Commercial Web

Are My Sites Up?

SIMPLE Website monitoring. If your website goes down, shouldnt YOU be the first to know about it?

Commercial Web

Monitoshi

Website uptime monitoring. Be notified by email when your site is down. Free and open source, monitor as many URLs as you want. You can hack it and host it yourself or...

Free Open Source Web

HostTracker

Possibility to receive error notifications both to your Email, ICQ, GTalk or cell-phone via SMS; Possibility to receive specified (daily, weekly, monthly, quarterly...

Commercial Web

Uptime Doctor

You can monitor up to 5 URLs with 1-minute monitoring interval, for FREE!

Free Web

Pingometer

Pingometer is a service that monitors the uptime, downtime, and performance of websites. You can monitor anything: HTTP, HTTPS, RUM, DNS, IMAP, POP3, SMTP, TCP, UDP...

Freemium Web

EZ Website Monitoring

EZ Website Monitoring provides keyword rank tracking, uptime monitoring, and error checking for your website.

Freemium Web

PingUptime

Website Monitoring, Downtime Alerts, Performance Monitoring. Be the first to know that your website is down and analyze your website performance history with powerful...

Freemium Web

updown.io

updown.io is a HTTP monitoring solution with a clean UI and a cheap and simple pricing. It notifies you of downtimes by email or SMS and provides a public status page...

Commercial Web

isUp

An intuitive website monitoring tool. You get: 25 monitors, checked every 3 minutes. Totally free!.

Free Web

Monitor Scout

Monitor Scout is a leading website and server monitoring company, with a wide selection of flexible, high quality services. The reliable web-based system monitors your...

Free Windows Linux Web

MonitorHub

Monitor your website from worldwide locations 24x7 and be the first to know when your website is down. Receive instant alerts via SMS, email & twitter. Detailed...

Commercial Android iPhone Web

Pingrely Website Monitor

24x7 Monitoring Our monitoring is performed with a frequency of 60 seconds, 24 hours, 365 days a year. This way you will be the first to know against any incidence.

Freemium Mac OS X Windows Linux

Uptime

uptime is a remote monitoring application using Node.js, MongoDB, and Twitter Bootstrap.

Free Open Source Web Node.JS MongoDB

ServersUp.net

ServersUp.net can check a number of different services on different hosts to make sure those services are up and running. It will send alerts when the statuses change.

Free Web

Servitor.io

Servitor is the easiest way to monitor your servers and website for resources, uptime, ssl certificates, mixed contents en broken links.

Freemium Linux Web

Super Monitoring

Affordable uptime monitoring service for webmasters and website owners. Have your website or server checked every minute and get alerted instantly.

Commercial Web