NetMap is described as 'watches hosts to be accessible via protocol ICMP. For this purpose the program periodically sends requests, completely similar to requests of program PING and checks for replies, which indicates activity of hosts and proper functioning of network connections' and is a Network Monitor in the network & admin category. There are seven alternatives to NetMap for a variety of platforms, including Windows, Linux, Mac, iPhone and BSD. The best alternative is PingPlotter, which is free. Other great apps like NetMap are PingInfoView, Ping Tracer, SmokePing and Multiping.