There are many alternatives to MASSCAN for Windows if you are looking for a replacement. The best Windows alternative is Nmap, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to MASSCAN and eight of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to MASSCAN are Angry IP Scanner (Free, Open Source), Fing (Freemium), Advanced IP Scanner (Free) and Fingbox (Paid).
Angry IP scanner is a very fast IP address and port scanner. It can scan IP addresses in any range as well as any their ports. It is cross-platform and lightweight. Not requiring any installations, it can be freely copied and used anywhere.
Reliable and free network scanner to analyse LAN. The program shows all network devices, gives you access to shared folders, provides remote control of computers (via RDP and Radmin), and can even remotely switch computers off. It is easy to use and runs as a portable edition.
Fingbox is a cloud system to monitor and manage your network, based on Fing Apps, Applications and Tools. It's a secure, cross-platform, comprehensive solution to discover devices, scan services, analyze and customize your networks, from anywhere.
Rumble is a network discovery platform that enumerates the network topology, identifies devices, and creates an asset inventory. Rumble runs discovery scans via a locally installed agent or using the standalone Rumble Scanner on the command-line.