Alternatives to LibreSpeed
Self-hostable speed test with no Flash, Java or Websocket. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
LibreSpeed
Self-hostable speed test with no Flash, Java or Websocket.
Replacements
Listings that take over the same core job as LibreSpeed.
OpenSpeedTest
HTML5 speed test that can be self-hosted from a Docker image.
OpenSpeedTest is another self-hostable HTML5 speed test shipped as a Docker image, so it suits LAN throughput testing in a browser without plugins.
iPerf3
Measures how fast a network link really is between two machines you control, which a speed test cannot.
iPerf3 measures the link between two machines you control from the command line, with TCP, UDP and SCTP options and JSON output, instead of a browser page.
nuttcp
Command-line tool for measuring TCP and UDP network throughput.
nuttcp is a cross-platform command-line throughput tester for TCP and UDP that must run on both ends, trading the browser interface for scripting and higher speeds.
Cloudflare Speed Test
A browser-based internet speed test that measures throughput, latency, jitter and packet loss.
Cloudflare Speed Test is a hosted browser test that adds jitter, packet loss and quality scores, but it measures only the path to Cloudflare and sends your IP there.
Speedtest CLI
Official Ookla speed test for the command line.
Speedtest CLI is Ookla's official closed-source command-line client with JSON and CSV output, testing against Ookla servers rather than a server you host yourself.
FAST.com
A minimal browser speed test that estimates your download speed in a few seconds.
FAST.com is a hosted, closed-source browser test that gives a quick download figure, with no self-hosting and no jitter or packet loss measurement.
Speedtest by Ookla
An internet speed test for measuring download, upload and latency in the browser or apps.
Speedtest by Ookla is a closed source hosted test with browser and apps that picks a nearby server automatically, rather than measuring your own path.
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 its public dataset.
Also worth comparing
These listings name LibreSpeed as their own alternative, so the relationship runs both ways.
nPerf
Internet speed test measuring download, upload and latency, in the browser and as apps.
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.
Similar software
Related functionality, not a direct replacement.
gping
Ping with a live graph, so you can see latency spikes and packet loss instead of reading a column of numbers.
mtr
Combines traceroute and ping into one continuously updating report.
Trippy
Combines traceroute and ping into one live interface showing loss and latency at every hop along a route.
Waveform Bufferbloat Test
Browser test that measures internet speed and how latency rises under load.
Flent
Network benchmarking tool that runs repeatable tests with netperf and iperf and plots the results.
