snmpdigger
A fully keyboard-driven terminal UI that walks, identifies, graphs and hunts SNMP agents — discover, graph, inform.
SNMP is a simple protocol still sitting on a huge amount of network gear, and snmpdigger is a full-screen TUI built around that exposure. It walks the MIB tree by numeric OID or human name with live-polled values, fingerprints what it is talking to from the enterprise number and decoded OSI service layers, graphs any counter or gauge as a live braille chart, bars, sparkline, gauge or heatmap, and sweeps a CIDR range, a whole announced ASN, or the local LAN for anything that answers SNMP — results streaming into the table as they are found. A Summary tab assembles a full network profile in one report: hardware, routing table, ARP/LLDP neighbours, listening ports, and for a publicly-routed target, reverse DNS, ASN, RIR and GeoLite location via RIPEstat. An offline MIB catalog covers the standard IETF set plus the major firewall and network vendors, and a built-in trap/inform listener decodes v1/v2c/v3 notifications live. One static Go binary, zero runtime dependencies, MIT licensed.