Mugsy
Mugsy is a Linux file integrity monitor. It runs as a daemon and any file modifications made to your system on directories you've specify to monitor are logged locally and optionally sent to your elasticsearch server(s).
Tripwire
Open Source Tripwire software is a security and data integrity tool useful for monitoring and alerting on specific file change ...
Samhain
The Samhain host-based intrusion detection system (HIDS) provides file integrity checking and log file monitoring/analysis, as ...
syschangemon
syschangemon - system change monitor Periodically collects system configuration (eg. conffiles in /etc, binary files in /sbin, ...
AIDE
AIDE (Advanced Intrusion Detection Environment) is a file and directory integrity checker. It creates a database from the regu ...