EventSentry Light is a powerful tool that can monitor your Windows event logs (and system health), alerting you to any problems.
If you're a Windows expert and want to be warned if a particular event type occurs, for instance, then you can have the program display a message or send you an email.
A Software Monitoring option allows the program to log when software is installed, or uninstalled (useful if your PC has several users and you'd like to track what they're doing). And it can also record programs that have configured themselves to load when Windows launches.
A Disk Space monitor is able to alert you when the free space on a drive gets too low (you get to decide what figure that might be). Or it can check a particular folder, alerting you when its size exceeds or falls below a particular limit.
And the Performance Monitoring module can track your PCs CPU or memory usage, again logging the details if something's hogging all your resources.
If you need even more power then opting for the commercial edition will get you the ability to manage more than 2 remote computers, with web-based reporting and iPhone/ Android apps. Command line tools support automation, there are full software and hardware inventories, and if you have any problems then you can call on phone, email and even "getting started" support. Prices start at $85 per host, and the EventSentry site will tell you more.
Version 184.108.40.206 (changelog).
Management Console: IP addresses are now annotated in built-in event viewer, similar to collector emails
Management Console: Fixed issue where application would crash on hosts with no Internet connectivity under specific circumstances
Management Console / Collector: Fixed issue where "Enhanced Security" setting in database action would not work and still transfer connection string to agent(s)
Collector: Fixed rare issue where collector service would not start
Collector / Network Services: Services can now read a 64-bit configuration if a 32-bit configuration does not exist
Collector: Fixed issue where certain event-based variables would not work in emails sent by collector
Collector: Fixed issue where non-routable IPs would prevent a reverse lookup in collector emails
Agent: Added ability to override title and message for "Network" action
Agent: Removed now obsolete configuration option for supporting pre-2003 hosts in "Network" action
Agent: Fixed potential buffer overflow
Agent: Various improvements throughout codebase to improve performance and stability
Agent: Fixed issue where excluding processes under "Compliance/Process Tracking" when using the collector would result in unnecessary data packets being sent to collector
Agent: Fixed issue where agent would not start - or start very slowly - and use a large amount of CPU time on Hyper-V VMs with only one vCPU.
Configuration Assistant: Creating databases on Microsoft SQL Server non-default instances is now more intuitive.
Web Reports: Added NetFlow Network Traffic JSON for inbound and outbound traffic
Web Reports: Updated sort indicators for detailed results
Web Reports: Improved dashboard iteration inheritance
Web Reports: Ensured correct url encoding when switching between Summary and Detailed views
Web Reports: Optimized resource usage when running report jobs
Web Reports: Fixed issue where search dashboard tile would ignore the percentage field
Web Reports: Updated Tomcat to version 7.0.73