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SFC is preinstalled with Windows.
The primary objective of System File Checker is to identify and fix corrupted operating system files.
It is a very helpful tool to diagnose various system issues such as the Blue Screen of Death.
You can run SFC using sfc /scannow command
Whirpool File Checker
Whirpool File Checker lets you check the integrity of your files.
You can run it on custom folders to compare the file contents using drag and drop functionality.
EventSentry
EventSentry gives powerful reporting APIs, real-time alerts and advanced reporting.
EventSentry has a free plan as well.
Netwrix Auditor
Netwrix Auditor is a freeware tool.
It continuously monitors your files for changes.
It also provides reports of failed data access attempts.
SolarWinds Security Event Manager
SolarWinds has extensive real-time monitoring, alerts and forensic analysis.
It comes with many monitoring templates to choose from.
It monitors your files, databases, applications and builds logs to safeguard your digital assets.