
zeek
Zeek is a powerful network analysis framework that is much different from the typical IDS you may know.
anomaly-detectionanti-botdefensive-tools+14

Zeek is a powerful network analysis framework that is much different from the typical IDS you may know.

Open-source email filtering framework that detects spam and phishing using content analysis, header checks, Bayesian scoring, and DNS blocklists.

Spam filtering and email processing framework with regex rules, statistical analysis, custom Lua plugins, and external blocklists for MTA integration.

SQL powered operating system instrumentation, monitoring, and analytics.

amavis is a high-performance email content filter framework written in Perl.