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The same web UI as ntpstats ui, running entirely in the page. The Python code (ntpstats and numpy) runs in WebAssembly through Pyodide. Nothing is installed, and the files you open are analysed on your machine. They are never uploaded, which matters when logs are sensitive.

  • First visit: downloads about 15 MB (Python, numpy and ntpstats); later visits use the browser cache. Startup takes a few seconds.
  • Everything that needs no network sockets works:
  • every input format (logs, captures, Stable32, research data);
  • stability with confidence intervals, the noise model, spectra, network metrics, time error and events;
  • holdover, simulation, CSV and HTML-report downloads.
  • Needs the installed version (pip install ntpstats): live NTP/NTS queries, monitor, watch of local daemons, and the command line. The UI greys out the Live button.

How it works: - One API, two transports. The UI talks to the same small JSON API as the local server. In the browser edition, a Web Worker answers it by calling ntpstats.web.server.dispatch under Pyodide. - Same code, same numbers. The ntpstats code is identical in both editions. CI loads the example logs in Chromium and checks that every number matches the installed package (to 1e-9, since WebAssembly and native numpy can differ in the last bits).

Build it yourself (for example for an intranet without CDN access):

python docs/build_app.py site-app/                 # Pyodide from the jsDelivr CDN
python docs/build_app.py site-app/ ../pyodide/     # or from a local copy of the Pyodide files
python -m http.server -d site-app