Copied from Fing Homepage (http://www.over-look.com/site/):


What is Fing?

Born from the ashes of [email protected], fing is the ultimate command line tool for network and service discovery, taking advantage of the brand new cross-platform network engine which is going to be the core of our next upcoming products.
Our new team of IT specialists has been working on it, and that is only our first milestone, a good way to start testing the core engine on the field and let you start enjoying the view of your network. Our plan is clear and straight and will brings us to offer to you a complete integrated solution for network monitoring and network management. 

At the moment fing is a command-line tool, but GUI is coming soon.


Network discovery

The network discovery provides you a complete view of any network in a very short time: fing smart discovery automatically detects the network type and uses the best technique to take the picture of it.

The best results are surely achieved on ethernet networks (WiFi ones included), where fing can benefit of a special data-link layer discovery engine which allows it to reach an impressive discovery sharpness and speed: no matter what firewall or blocker you installed on a machine, fing is going to discover it in few seconds!


You can start as many discoveries you wish, and for each running discovery you can make fing produce several output flows. E.g. a network table view in HTML format plus a CSV log of network events. Fing provides reports that can be used in console window, during normal network/system administration work, like a plain text report, but also enhanced reports, like HTML or XML format, that can be viewed from a browser or imported by your 3rd party applications. 


Service discovery

The service discovery feature quickly detects active TCP services on a target host or network.

Service discovery also gives its best with ethernet-based networks, where TCP SYN scan technique can be applied to audit active services on any host in few seconds. 

Discovered services can be exported to various formats (like text, CSV, XML, HTML), so that it is actually possible not only to use it as a command line administrative tool, but also integrated with your 3rd party applications.


DEB package for 32bit platforms: Ubuntu 8.x, Debian 5.0 and other Linux DEB based distributions with gcc-4.x.


Fing is freeware


Changelog:


 + No need to restart fing when customizing host-friendly names

 + CSV separator can be customized

 + Other cosmetics


Comments from the uploader (olofolleola4):
Here is the link to the Installation guide: 
http://www.over-look.com/site/index.php/documentation/fing-installation