Remote Nmap is a python client/server package which allows many clients to connect to a centralized nmap server to do their port scanning. This could be useful for security companies who want to have all thier scans come from a dedicated machine.
You can download it from the following link: https://packetstormsecurity.com/files/download/22888/rnmap_0.3-beta.tar.gz
Source: https://packetstormsecurity.com/files/22888/RNmap-0.3-Beta.html