Long-time Slashdot reader collinl writes: Nmap was released 19 years ago on September 1… Seems like it has been around for ever. Was there a port scanner before Nmap?

Good question. Nmap first appeared in an article in Phrack magazine back in 1997 (which included its complete source code), although over the years its output options have expanded to include a humorous “script kiddie” format. And by 2007 the Nmap Scripting Engine was released, which in 2010 was used to generate a cool visualization showing the popularity of the top million favicons.