How to do LAN search similar to Netscan in Windows?

There is a command line utility for that, nbtscan, it's available from the repositories.

sudo apt-get install nbtscan

nmap! It's the definitive tool for network discovery (among other things). You can install it from the repositories using

sudo apt-get install nmap

After that, you can execute

nmap 192.168.1.0/24

to reveal services on your subnet, assuming you are on the 191.168.1.0/24 subnet. For a more detailed report, you can type

sudo nmap -sS -O 192.168.1.0/24 

Netscan (for windows) is a very handy tool for browsing lan. There is a similar application for linux too, named ---ShareScanner (netscan for linux). You can download it here on SourceForge

The site contains 32 and 64 bit debian and rpm packages for easy installation. It is actually a GUI for smbclient.