IVRE is an open-source framework for network recon. It relies on open-source well-known tools (Nmap, Masscan, ZGrab2, ZDNS and Zeek (Bro)) to gather data (network intelligence), stores it in a database (MongoDB is the recommended backend), and provides tools to analyze it.
Real Intelligence Threat Analytics (R-I-T-A) is an open-source framework for detecting command and control communication through network traffic analysis. The RITA framework ingests Zeek logs or PCAPs converted to Zeek logs for analysis.