Spiceworks IP Scanner

Free IP scanner is a very fast IP scanner and port scanner. It is intended for both system administrators and general users to monitor and manage their networks. Powered with multi-thread scan technology, this program can scan hundreds computers per second. It simply pings each IP address to check if it's alive, then optionally it is resolving its hostname, scans ports, etc. Free IP scanner can also display NetBIOS information: host name, workgroup, currently logged user and MAC address. The information obtained can be exported into a file as plain text file. Free IP Scanner can scan hundreds of computers per second which is ideal for administrators. You can configure it to scan in many priority levels, set number of maximum threads and so on. Use two fields of IP Range to enter first and last IP addresses. The last IP address can be less than the first one - there is no problem with translating your input.

Network Scanner is an IP scanner that is used for scanning both large corporate networks that have hundred thousands of computers along with small home networks with several computers. While the program can scan a list of IP addresses, computers and ranges of IP addresses, the number of computers and subnets is unlimited. Network Scanner will show you all the shared resources, including system and hidden NetBIOS (Samba) shared resources along with FTP and web resources. To audit network computers or use it to search for available network resources, both network administrators and regular users can use Network Scanner. Network Scanner will not only find network computers and shared resources, but also check its access rights which the user can mount as a network drive or open them in Explorer or in their browser. You can easily export the results of scanning the network to an XML, HTML or text file or store them in the program itself.