Observed arrival · 2026-09-02
Netrivo, a Local-First Packet Analyzer
A Windows network-monitoring tool that captures packets at the kernel level, decodes protocols, tracks flows, and displays live activity in a dashboard or terminal.
Field notes
The documented workflow moves packets from Npcap and a C++17 capture engine through a 20-byte-header binary pipe into Python 3.11/FastAPI analysis, then streams JSON over WebSocket to a React 19/Vite dashboard. The page specifies a configurable 16 MB kernel buffer, defensive validation for IPv4 and TCP fields, bidirectional five-tuple flow tracking, and an exponential moving average with alpha=0.3. The Windows download is listed at roughly 26 MB and requires Npcap.
Observed signals
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