Dnmap is a framework to distribute nmap scans among several clients. It reads an already created file with nmap commands and sends those commands to each client connected to it. The framework uses a client/server architecture. The server knows what to do and the clients do it. All the logic and statistics are managed on the server. Nmap output is stored on both server and client. Usually, you would want this if you have to scan a large group of hosts and you have several different internet connections (or friends that want to help you)
Download Link:- https://github.com/Seabreg/dnmap