b2cNetworkMonitor

When an office connection feels slow, the useful question is whether it's slow at certain hours, and for how long. b2cNetworkMonitor answers it by measuring all the time.

It runs as a long-lived process on a machine in the office. A background scheduler pings on a fixed interval and runs a bandwidth test less often, with both intervals configurable, and stores every sample in a local SQLite database. Ping flags adapt to the platform, so it runs on Linux, macOS and Windows.

A small Flask app serves a single-page dashboard with Chart.js charts and JSON endpoints for latency and bandwidth over a chosen lookback window, so any device on the local network can check it. Once a day and once a week it writes a human-readable HTML report with matplotlib charts, and those reports can be browsed from the same dashboard.