Insecure.org, developers of Nmap, have announced the release of version 5.00 today.
The latest version of the open source security tool include increased performance, a scripting engine, and a new tool called Netcat, which the Nmap developers say is a "Swiss Army Knife" for network security.
Nmap is used for a wide variety of network security tasks, including vulnerability scanning and intrusion detection.
Nmap can identify machines on a network, detect open ports, and even detect the operating system being used.
Nmap is open source, which means that anyone can get the source code and learn how the program works. Programmers can make changes and redistribute them as well.
Nmap is cross-platform, and runs on Linux, Mac OS X, Windows, and the various BSD systems, among others.
Nmap is typically used from a command-line, although graphical version, Zenmap, is available.
"We consider this the most important Nmap release since 1997," Insecure said on their page for Nmap 5.00.