It's a Go TUI (Bubble Tea) that runs against Cloudflare's speed test infrastructure. No API keys, no accounts, fun UI.

One thing I added that I've found genuinely useful: it also pings during the throughput test and compares idle vs loaded latency, which gives you a rough bufferbloat grade. Handy for figuring out why your Zoom calls lag even when speedtest.net says you're fine.

Source: https://github.com/allenan/brr (MIT)

Happy to hear what you think.