Best speed-test tools

Browser bandwidth tests with a self-hosting option

Netflix's browser speed test with loaded-latency details

Research-oriented Internet measurements with public result data

Measure throughput, jitter, loss and application-oriented network quality

A Go command-line client for the Speedtest network

Browser measurements of download, upload and ping

Keep a self-hosted history of Internet performance

Host a browser speed test with configurable telemetry

Browser speed measurements with history and CSV export

An independent C++ client for Speedtest measurements

Internet speed testing with mobile coverage resources