Layer 2 and Layer 3 network diagnostics for Windows: device discovery, MAC-level latency, Path Doctor fault localization, Storm Center and Wi-Fi ↔ LAN testing, drawn as a live spider web.
ARP and IPv6 neighbor sweeps, LLDP, CDP, mDNS, SSDP, SNMP, SMB, TLS and vendor protocols feed an evidence-based classifier with about 170 brand rules.
Latency at Layer 2 and 3
Real MAC-level round trips from high-precision capture timestamps next to ICMP and TCP, including device-to-device timing.
Path Doctor
Probes every hop from your PC to the internet and turns failures into incidents with a root-cause sentence and a confidence score.
Storm Center
Broadcast, multicast and unknown-unicast levels against a learned baseline, with the top sources mapped to their switch port.
Wi-Fi ↔ LAN
Separates the radio hop from the backhaul, and measures true one-way latency across switch and AP on dual-adapter PCs.
Reports and alerts
Export JSON, CSV, Nmap XML, HTML reports and pcapng. Send alerts to Discord, Slack, webhooks or syslog.
Take the tour
See what NetSpider sees.
Your whole network as a living web
Every device, every link and its measured latency, animated in real time. Slow links glow amber, failures turn red, and suspected faults are marked on the path.
Every hop, probed continuously
The hop chain from this PC to the internet with latency, added latency, loss, jitter and ARP-vs-ICMP per hop. The red link marks exactly where it breaks.
Root cause, in plain language
Correlates the first failing hop, devices that dropped together and switch-port evidence into a single incident with a confidence score.
Catch storms and loops early
Live broadcast and multicast levels against a learned baseline, top talkers mapped to their switch and port, a loop finder and pcapng recording.
An inventory that explains itself
Vendor, model, operating system and services, with the evidence behind every identification and launchers for SSH, RDP and web UIs.
Radio problem or backhaul problem?
RSSI, link rate, roams and disconnect reasons for this PC, nearby networks and channels, and per-AP health seen from the wired side.
A health score with reasons
DNS, MTU black holes, bufferbloat, cleartext management, expired certificates, SMBv1 and rogue DHCP or router advertisements.
Subnets and VLANs, discovered
Other networks found through the route table, DHCP option 121, traceroute, SNMP and tagged DHCP probes.
More screens
Built to be lived in.
Spider web with device inspectorHierarchy treeSwitch port matrixFirst-run welcomeRelease and pre-release channelsBuilt-in updaterAbout NetSpider
Download
Get NetSpider 0.1.0
Free and open source. Pick your architecture, then the package that fits.
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