Alternatives to nPerf
Internet speed test measuring download, upload and latency, in the browser and as apps. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
nPerf
Internet speed test measuring download, upload and latency, in the browser and as apps.
Replacements
Listings that take over the same core job as nPerf.
Speedtest by Ookla
An internet speed test for measuring download, upload and latency in the browser or apps.
Speedtest by Ookla measures download, upload and latency in the browser or apps, picks a nearby server automatically and keeps result history, and is also closed source.
Cloudflare Speed Test
A browser-based internet speed test that measures throughput, latency, jitter and packet loss.
Cloudflare Speed Test is browser-only but adds jitter, packet loss and quality scores, measuring only the path to Cloudflare's network.
FAST.com
A minimal browser speed test that estimates your download speed in a few seconds.
FAST.com gives a quick download figure in the browser with latency on request, but hides upload by default and has no apps.
M-Lab Speed Test
A browser speed test from Measurement Lab that publishes its measurement data openly.
M-Lab Speed Test uses openly licensed tools and reports retransmission, but publishes your IP address with results in a public dataset.
LibreSpeed
Self-hostable speed test with no Flash, Java or Websocket.
LibreSpeed is an LGPL-3.0 speed test you host yourself, so results measure the path to your own server and come with fewer analytics.
OpenSpeedTest
HTML5 speed test that can be self-hosted from a Docker image.
OpenSpeedTest is an open-source HTML5 test self-hostable from Docker, useful for LAN throughput, though browser measurement caps below dedicated tools.
Speedtest CLI
Official Ookla speed test for the command line.
Speedtest CLI brings Ookla's test to the command line with JSON and CSV output for scheduled monitoring, licensed for non-commercial use by default.
Waveform Bufferbloat Test
Browser test that measures internet speed and how latency rises under load.
Waveform Bufferbloat Test runs in the browser and measures how latency rises under load, focusing on lag in games and calls rather than coverage maps.
Similar software
Related functionality, not a direct replacement.
iPerf3
Measures how fast a network link really is between two machines you control, which a speed test cannot.
Downdetector
A website that shows whether online services, networks and games are down, based on real-time user reports.
Flent
Network benchmarking tool that runs repeatable tests with netperf and iperf and plots the results.
Speedify
A channel bonding VPN that combines Wi-Fi, cellular, Ethernet and satellite connections into one.
nuttcp
Command-line tool for measuring TCP and UDP network throughput.
