Angry IP Scanner

Angry IP Scanner is an open-source and cross-platform network scanner designed to be fast and simple to use.

Summary

Angry IP Scanner (or simply ipscan) is an open-source and cross-platform network scanner designed to be fast and simple to use. It scans IP addresses and ports as well as "has many other features":http://www.angryip.org/w/About. It is widely used by network administrators and just curious users around the world, including large and small enterprises, banks, and government agencies.

Software
Platform Version Release Date Size
Mac OS X 10.5, 10.6 3.0-beta4 March 23, 2009 805.6 KB Download
Windows 2000, Vista, XP 3.0-beta4 March 23, 2009 960.7 KB Download
Java

Most Popular

LCD vs plasma vs LED TVs buying guide
Tethering tutorial: How to use your iPhone as a modem
Untethered jailbreak for iOS 5.1.1 available for download
Australia: a video on demand backwater
Connecting your new iPad 2 to the Internet