Sentry-go Quick Disk Monitor
The Sentry-go Quick Disk Monitor allows you to quickly & easily check available disk space on your local PC or server. Running as Windows service, checks can be made periodically without any user action, checking for either a given amounto f space (Mb) or percentage disk space free. ... If insufficient space is found, the monitor can automatically take corrective action to delete temporary files & free up space. ... The monitor can be configured either locally or centrally using the Sentry-go Quick Monitor Console.
http://www.3ds.co.uk/sentry-go/shareware/qdisk.exe - 4Mb - Download - Screenshot

Abaiko Disk Space Monitor
Abaiko Disk Space Monitor is a program monitoring free space on the disks of your computer. Modern computers have a lot of space on their disks. And people stopped watching the space thinking that disks of that size just cannot be too small. Most likely, some software developers stick to that... The simple, but still useful tool Abaiko Disk Space Monitor will keep you informed about the amount of free space on your disks. ... Abaiko Disk Space Monitor is intended for both regular home users and system administrators that need space for quickly growing logs of various systems, enlarging...
http://www.abaiko.com/download/abaiko-disk-space-monitor.exe - 2Mb - Download - Screenshot

Easy Network Service Monitor
Easy Service Monitor is a network fault management tool that continuously monitors network devices and services. If something went wrong, it will alert you by email/phone/pager BEFORE problems get seriously out of hand. A detailed log file will record every event of the monitored targets and can... You can configure the system so that when something goes wrong, a set of actions, such as execute a program, reboot server or update web page, will be triggered.
http://www.javvin.com/emonitor.exe - 2Mb - Download - Screenshot

PA Server Monitor
PA Server Monitor is a Windows service that monitors the health and availability of Windows servers, network services (on Windows, Linux and other operating systems), and devices. No agents are needed to monitor remote servers. Also includes rich reporting on most monitored resources. ... PA Server Monitor can watch: Event logs on local and remote Windows servers CPU and memory usage Free local and server disk space Changed files and directories (great intrusion detection) Running Windows services Custom script results Local and remote directory quota monitoring Network Interface...
http://www.poweradmin.com/servermonitor/servermonitorpro.exe - 5Mb - Download - Screenshot

ServerSweep Professional
ServerSweep Professional has been designed from the ground up by experienced Microsoft Windows NT / 2000 Server support engineers and consultants to provide the very best in Microsoft Server Monitoring. ServerSweep Professional has been optimised to allow you to monitor almost every aspect of... ServerSweep offers a rich set of monitoring options including: System Overview, TCP/IP, Services, Processes, SNMP, Event Log, Performance, URL, Disk Space and Custom Tests. ... Net Server, without the need to install any client software on the monitored server itself.
http://www.blue-square-software.com/pages/Trial/downloaddetails.htm - 16Mb - Download - Screenshot

Overseer Network Monitor
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... And the Available Disk Space resource type will regularly poll your servers' hard drives to make sure they don't run out of space. ... The Windows Service resource type allows you to monitor services running on Windows NT/2000/XP/2003 servers.
http://www.overseer-network-monitor.com/downloads/overseer.exe - 7Mb - Download - Screenshot

Sentry-go Quick Server Monitor
The Sentry-go Quick Server Monitor allows you to easily monitor your Microsoft Windows Server, take automatic action and/or alert you to issues should they arise. Quick & easy to install, configure & manage, Sentry-go allows you to concentrate on your other jobs while it monitors the server. ... When errors are detected, the Quick Monitor can either respond automatically (e. ... The Quick Monitor Console can also be used view alerts, configure or synchronise settings, or access web reports. ... Errors written to log files & Event Logs and available disk space can also be verified.
http://www.3ds.co.uk/sentry-go/shareware/qserver.exe - 4Mb - Download - Screenshot

FolderDog
Monitoring how much hard disk space is being used on a single computer can be a daunting task. Now imagine if you needed to monitor the amount of hard disk space is being used on 5 computers. What if different users on your network had a Shared storage area on your file server, each user had a... How would you make sure users are not using more space than you havea llocated? ... FolderDog allows you to monitor all of these situation and any other, you desire, all in one simple interface. ... Warnings are sent, Admin is notified but no data will go lost.
http://www.fungusware.com/files/Setup_FolderDog.msi - 1b - Download - Screenshot

GFI Network Server Monitor
GFI Network Server Monitor automatically monitors the network & servers for failures. It allows you to identify issues and fix unexpected conditions before your users (or managers) report them to you! Alerts can be sent by email, pager or SMS, for instant problem notification. ... You can also write custom monitor functions in VBscript and leverage ADSI and WMI, allowing you to monitor virtually anything. ... GFI Network Server Monitor is easy to set up and use, and is competitively priced. ... Built-in monitoring rules include: Exchange Server 2000/2003, MS SQL, Oracle and ODBC databases,...
http://software.gfi.com/networkservermonitor7.exe - 13Mb - Download - Screenshot

IPSpaceMon
Are you an over-worked network administrator? Get calls complaining about system outages you have no way of monitoring? Are you sufferring from server crashes or data loss due to lack of hard drive space? SpaceMon makes it easy to watch network storage space and alert you from your current... Simply type in the resources you want monitored (drive letters or UNC paths) and the level of free space you want to be alerted at. ... That's it! ... If any one of the network resources dips below the alert level you set, you will be notified visualy, audibly, by email and through your current...
http://www.ipworx.com/product/spacemon/spacemn3.zip - 4Mb - Download - Screenshot