PortScan shows all open ports and additional information like host name, MAC address, HTTP, SMB, FTP, iSCSI, SMTP and SNMP services. Up to 100 threads are used for scaning large ip address ranges. You can search for UPnP enabled devices, Bonjour services, Netgear router, Samsung printer and Freecom network devices. So you can find them even if you don't know the ip address. Ping any computer with 3 standard sized ping packets, with 3 different sizes, each 10 times or ping the computer continuously. .....(free).....