20 free software favorites

Freeware applications and open source software that provide IT managers with great tools at no cost

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Nmap is a free, open-source security scanning utility that scans networks for network exploration, inventory or security auditing purposes. Key features: Designed to rapidly scan large networks, Nmap runs on all major operating systems and uses raw IP packets to determine which hosts are available on the network, which services those hosts are offering, what operating system they are running and what types of packet filters and firewalls are in use.

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