WebMon

WebMon is a freeware web page update monitoring program - it saves you time and keeps you updated by automatically checking web pages to see if they have changed. ...

Free Windows

OpsDash

All-in-one server monitoring, service monitoring, database monitoring, uptime monitoring, app metric monitoring and alerting. Fast setup. Easy to use.

Commercial

PhpSysInfo

phpSysInfo: a customizable PHP script that displays information about your system nicely

Free Open Source Self-Hosted PHP

ServerBeep.com

Free simplest server monitoring. 10 minutes checks interval. Up to 10 services per account for free. Multiple contacts. Availability history. Public status page. Uptime...

Free Web

WDT.io

Use these simple Watchdog Timers to monitor both HTTP servers and scheduled jobs such as cron jobs.

Commercial Web

TrackEngine

TrackEngine allows users to monitor any websites and to be alerted of new content on any devices.

Freemium Web

AlertFox Website Monitoring

AlertFox can monitor even complicated steps, (e.g., the complete check out process, not just store uptime)! Only AlertFox can monitor the function and performance of...

Commercial Mac OS X Windows Linux Web Firefox

Web on Duty

With us, your website will always be available and friendly to customers. Around the clock we will watch over your website. In the event of any emergency, problem or...

Commercial Web

Monitive

Monitive delivers reliable, simple, efficient monitoring services for websites, MySQL, FTP, POP3, IMAP, DNS and many other. All this comes along with complete and...

Freemium Web

PingMonit

Monitors your websites every 1 minutes, totally free. Get alerts by e-mail, SMS. Add up to 3 websites for free,. Monitors can be refreshed for an instant check with a...

Freemium Mac OS X Windows Linux Android iPhone

SiteMonitor

SiteMonitor will monitor your websites/hosts at regular intervals and notifies you when something happens.

Commercial Windows

Diff-IE

Diff-IE is a prototype Internet Explorer add-on that highlights the changes to a page since the last time you visited it and enables you to view and compare previously...

Free Windows Internet Explorer

Freesitestatus

Free website and server monitoring. Remote website, web server & server monitoring from worldwide locations with SMS & Email alerts.

Freemium Web

GotSiteMonitor.com

Website Monitoring - Monitor your website uptime and HTTP/FTP/SMTP/POP3 services. Real-time Phone and SMS alerts. Free website monitors available.

Freemium Web

Observu

Website and server monitoring with alerting via e-mail, SMS and phone calls. Has a dashboard to easily monitor 100 or more services at a time by sorting them depending...

Commercial

PINGuana

Peace of mind that your website is up and running 60/24/7/365. If you don't hear from us, everything is fine, if you do, then you can get any issues resolved ASAP...

Commercial Web

Snapmon

Snapmon lets you monitor your servers to make sure everything is running. When a server goes down, you can be notified by SMS Text Message, Email, AIM, or Google Talk.

Freemium Web

Webmon.com

Webmon is a Realtime Website Monitoring and Escalation Service. Webmon is a website availability monitoring and escalation service that allows you to monitor your...

Commercial Web

WebSitePulse

WebSitePulse is a leading provider of advanced, independent and remote monitoring services that enable clients to increase the efficiency of their mission-critical...

Freemium Android iPhone iPad Web

BrowserMob Monitoring

As of May 2015, Browsermob is dead. "Website monitoring for the masses. From basic free plans to enterprise level solutions, BrowserMob has it all - try our...

Commercial Web