| WatchDog 
Monitors website status and sends instant notification when it is not reachable. Demo and purchasing information. |
| WatchMouse 
The European site monitoring service, checks servers 24 hour a day, 7 days a week. Offers free and paid services such as web, mail, FTP, and IMAP. |
| Watchdog Host Monitor 
Offers 24-hour site monitoring service. Tracks web site performance and accessibility from five global monitoring locations. |
| WebSitePulse 
Provides website and server monitoring, web application and email system monitoring services, with email and SMS alerts when problems are detected. |
| Webmetrics 
Offers monitoring and testing services. Includes company overview and information on support services. |
| Website Alert 
Free internet server status monitoring, alerts by e-mail. |
| Website Availability 
Monitors your web site from the US or Europe. |
| Yodzu 
The 24-hour monitoring service that lets you know the moment your website goes offline. |
| eValid Test Services 
Range of client-side browser based test services based on use of the CAPBAK/Web product. |
| At Watch 
Watches your web site 24 hours a day, 7 days a week. It will send immediate alerts via email/pager, fax, or live voice if your site is down or broken. |
| Available.be 
European web server monitoring services and availability measurements. |
| CheckMyServer 
Remotely monitors your server and alerts you instantly via SMS, MSN Messenger and/or e-mail. Each week you receive a server ranking and reports of statistics. |
| CheckUpDown 
Automatic check if a Web site is up or down and response times for the server. Also provides some site statistics. |
| Crypton Computers 
Provides web-based network monitoring solutions. |
| Dotcom-Monitor 
Global web site monitoring service providing web application monitoring, network monitoring, website load stress testing with reporting, notification, escalation and analysis in one single solution. |
| ElkMonitor 
Monitors websites and other internet servers for availability and performance. Alerts users when their sites or servers are unavailable or performing poorly. Alerts via email, pager, or SMS. Free trial. |
| FMS NetCheck 
Web based network monitoring tools used to verify your website and services are up and running at all times. Provides a full range of monitoring tools for internet and IT systems. Service will check, notify, and report any problems with the services your business relies on. |
| HostGuardian 
Server port monitoring, content checking, host process verification, and router latency/packet loss monitoring. |
| IPWatcher.com 
Sends email or instant message notification of website service outages. |
| InternetCM 
Online service which allows you to specify Internet resources, web sites, or keywords that you want monitored. |
| InternetSeer 
Remotely monitors Web sites and provides alerts by email or pager email when sites becomes unavailable. Free limited option available. |
| Mercury SiteScope 
Providing application performance, configuration management and network monitoring software solutions. |
| NMSalert 
Checks websites every five minutes and lets the client know if there are problems by eMail, fax, or SMS. Free trial available. |
| NetWhistle 
Advanced web site monitoring service which tests website availability from worldwide network of servers. Includes extensive reports for web site performance, downtime, ssl, http, smtp, pop3 server monitoring, and instant alerts. |
| Netmon 
Application that monitors your site through code that you place on your web page. Free version available. |