PBNJ is a network tool that can be used to give an overview of a machine or multiple machines by identifying the details about the services running on them.
PBNJ is different from other tools because it is based on using a scan from nmap parsed to amap. PBNJ parses the data from a scan and outputs to a CSV format file for each ip address scanned.
However, PBNJ is able to handle additional scans and parse the data while only looking for changes. For example, if a machine was updated with a newer version of OpenSSH than was running when the first scan was performed, the CSV file would contain the difference of the scan.