Description: GRC Port Scan is a free network scanner that checks open TCP and UDP ports on a target computer or device. It can scan common ports or a custom range, and has useful features like port mapping and reporting.
Type: software
Pricing: Free
Description: Zentyal is an open source Linux server that offers a variety of network services, including DHCP, DNS, HTTP proxy, firewall, VPN, mail, viruses blocking, gateway, unified threat management, LDAP directory, Samba file server, and certification authority.
Type: software
Pricing: Open Source