# OpUtils - Free Network Discovery Tools Network discovery tools is a part of [network tools](https://www.manageengine.com/products/oputils/free-network-tools.html) which are used in discovering all the devices in a network within a specified IP range. These software tools scan a range of IP Address to discover the live devices in the given IP address range. ## Tools included under this category are: 1. [Ping Scan](https://www.manageengine.com/products/oputils/diagnostic-tools.html#ping-scan): Fetches a list of live IP devices that responds to the ICMP ping. 2. [SNMP Scan](https://www.manageengine.com/products/oputils/diagnostic-tools.html#snmp-scan): Fetches a list of live SNMP-enabled IP devices that responds to the SNMP ping.