NetworkToolbox - Net security Alternatives

Open-source and cross-platform network scanner designed to be fast and simple to use.

Fing helps you understand most of your home network. See all the devices connected to your Wi-Fi, run network scanners, monitor your Internet speed, know your security level, set automated vulnerability checks, and much more.

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.

A handy systems and security-focused tool, Port Authority is a very fast Android port scanner. Port Authority also allows you to quickly discover hosts on your network and will display useful network information about your device and other hosts.

This fast, highly configurable IPv4/IPv6 scanner can streamline many of your network support procedures.

Wireless Network Watcher is a small utility that scans your wireless network and displays the list of all computers and devices that are currently connected to your network.

Advanced Port Scanner is a fast and free software for port scanning. It will allow you to quickly find all open ports (TCP and UDP) and detect versions of programs running on them. The utility includes many features simplifying network management.

Collect active network systems, like a network ascanner, in the local network and send WOL packets to wake up them using their MAC address.

iNet provides you with information about networks your iPhone or iPod touch is connected to. Its very easy and user friendly design even allows the unexperienced user to get a profound and understandable overview of a network and the running services.

Netdiscover is an active/passive address reconnaissance tool, mainly developed for those wireless networks without dhcp server, when you are wardriving. It can be also used on hub/switched networks.