NmapSI4 is described as 'NmapSi4 is a complete Qt4-based Gui with the design goals to provide a complete nmap interface for Users, in order to menage all option of this power security net scanner and search services vulnerability' and is an app in the Network & Admin category. There are more than 10 alternatives to NmapSI4 for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is Nmap, which is both free and Open Source. Other great apps like NmapSI4 are Angry IP Scanner (Free, Open Source), Fing (Freemium), Zenmap (Free, Open Source) and Advanced IP Scanner (Free).
Dipiscan is a free IP scanner that allows you to remotely retrieve information about machines on your network using a clear and ergonomic interface (as well as a command-line mode) . It also includes wakeonlan/shutdown and other advanced features.
Umit: The Nmap Frontend: Umit was designed to accomodate and run more than one scan at time. Each scan is executed and shown inside a Scan Tab, which has a title and organize every information obtained in the scan result.
The IPPINGER is an application for checking a host or multiple hosts periodically. It can check IPs, websites and also ports (if are open). It can be configured to notify by email or Windows Notification when a host is down.
NetCrunch Tools is a completely free toolkit for network professionals, featuring Ping, Traceroute, Wake OnLAN, DNS Info, Who Is, Ping Scanner, Service Scanner, Open TCP Port Scanner, SNMP Scanner, DNS Audit and Mac Resolver in one.
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.
Assess channel usage of neighboring routers / access points and get a desktop alert if your active channel is not optimal (has more than 1 user on it, other than you). Troubleshoot your wifi without lifting a finger!.