Gamemonitor.net  

Gamemonitor.net is an online service which queryes your Counter-Strike server and generates an image with the current state of your server. This is a free service and it will stay free as long as no one abuses it. Setup is easy and will only take a couple of minutes.

Price: Free

   NOC Status  

NOC Status provides you with an exceptional service, our hosted application service provides your customers with a failsafe way to contact you, read emergency announcements and check your servers status.

Price: $9.95/month

   Network and Website Monitoring Tools  

Remote network and web site monitoring performed from stations around the globe, with instant alerts around the clock, checking for performance, content and accessibility.

Price: Free to $1,

   SiteUptime  

SiteUptime is a free website monitoring service that watches your website 24/7/365 and notifies you if it becomes unavailable.

Price: Free

   Sentinel MP  

Sentinel MP alerts you when a database is overused, when activity levels are too high, or if a hard drive is almost full and there is huge burst of traffic, so websites can operate without disruption and services and applications can respond as usual. So now you can offer clients and employees access that is uninterrupted and service that is consistently good.

Price: $150/month

   Alertra Web Site Monitoring  

Multiple monitoring stations around the world take turns conducting rigorous protocol-based tests on your web server or other network service. If a station reports a failure, another station checks your server again in a few seconds.

Price: $2.99+/mont

   HostGuardian  

HostGuardian minimizes your downtime by alerting you to problems with your site using a 5 minute polling rate. Our complete set of monitoring tools allow you to verify ports are up, content is correct, server processes are responding as they should, bandwidth is being utilized correctly, and routers are accessible with no latency or packet loss.

Price: $10.95+/mon