Bello Network Monitoring WinGUI   
http://www.paessler.com

Our on-demand monitoring service makes it easy and affordable to detect network and website failures early, minimizing downtime and avoiding economic impact. bello network monitoring service periodically checks your website as well as your other servers. As soon as outages are discovered you will be notified via email, SMS/pager or ICQ message. For the free starter account the monitoring interval is 60 minutes, for full service accounts you can choose monitoring intervals down to one minute. Sensor types include PING, PORT, HTTP, HTTPS, Advanced HTTP, HTTP Transaction, DNS, SMTP, POP3, SNMP, FTP and more. Even if you run your own monitoring systems you might want to consider using our on-demand monitoring service as a "second opinion" about the availability of websites and their uptimes, e.g. when SLA (service level agreements) must be checked.

IPCheck Server Monitor   
http://www.paessler.com

IPCheck Server Monitor 5 helps organizations monitor critical network resources and immediately detect system failures or performance problems. It offers reliable network and website monitoring using Paessler's IPCheck™ Technology, fast and easy installation, support for Windows NT/2000/XP/2003 and an intuitive web based user interface. Various sensor types including PING, PORT, HTTP, HTTPS, Advanced HTTP, HTTP Transaction, DNS, SMTP, POP3, SNMP and custom sensors are supported for in depth monitoring of almost any network device. Notifications can be triggered by uptimes, downtimes or slow responses and can be sent out by email and ICQ, via SMS and to pagers. Detailed uptime/downtime reports and graphs can be created online at any time. The Freeware Edition monitors up to three sensors and is limited to PING, PORT and HTTP sensors and can be upgraded to the full feature set by requesting a Free 30 Day Trial License or by purchasing a Full License.

Overseer Network Monitor   
http://www.sensiblesoftware.com

Award-winning Windows-based network/system monitoring software designed to monitor websites, network devices, services, event logs, available disk space servers, etc. Notifications are sent via Email(including cell phone/pager!) and/or net send. Overseer supports monitoring multiple types of resources. Ping allows you to monitor any computer or network device to make sure it is connected to the network. The HTTP/HTTPS resource type allows you to monitor your websites to make sure they're responding to user's requests. The Windows Service resource type allows you to monitor services running on Windows NT/2000/XP/2003 servers. The Windows Event Log resource type allows you to monitor event logs from your Windows computers. And the Available Disk Space resource type will regularly poll your servers' hard drives to make sure they don't run out of space. Overseer can be configured to send notifications after a resource has been down for a certain amount of time, re-send notifications at specific intervals, stop sending once a certain period of time has elapsed and even notify you once a resource comes back on-line. Letting Overseer watch your systems 24 hours a day will give you peace of mind that your systems are always available and can potentially save your company thousands of dollars in downtime. Download the fully-functional trial today.

ServersCheck STANDARD Edition   
http://www.serverscheck.com

ServersCheck Standard Edition is a tool for monitoring, reporting and alerting on network and systems availability. The standard version can be used for free with up to 5 devices, which is adequate for personal use. It can monitor any TCP Port (HTTP, HTTPS, FTP, NNTP, POP3, SMTP, VNC, DNS, etc.), check Oracle, MySQL, ODBC databases, trap SNMP values (disk space, free memory, CPU usage,...), verify content served from a web server and check NT services, NT or Linux Processes availability. In addition, it also can monitor environmental devices like temperature, humidity, flooding. ServersCheck runs as a local service and is administrated through a browser interface by connecting to the built-in web server. Additional features include graph output for long-term statistics tracking. Alerting can be done through email, SMS, MSN or network message

Event Log Janitor   
http://www.streiff-is.com

Event Log Janitor Emails Event Logs at predefined Intervals (in hours) that you specify and you can optionally clear them. Supported logs: APPLICATION, SECURITY, SYSTEM, DIRECTORY SERVICE, FILE REPLICATION SERVICE, and DNS Server. Simple to use, requires no SMTP Server setup - specify DNS Server, email address(es), hour interval to email, and whether or not to clear the log in the easy portable dialog configuration. Requires the MS.NET Framework from Microsoft's site. A great utility, simple to use for Network Admins, Security Admins, Power Users, and anyone who wants to keep an eye on their system and security functions anywhere across the Internet!