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About M-Lab Speed Test
M-Lab Speed Test measures download and upload speed, latency and retransmission using the NDT test against Measurement Lab servers. Before testing you must agree to a data policy, because results, including IP addresses, are retained and published as open data.
Measurement Lab is a consortium of research, industry and public-interest partners, and its measurement tools are openly licensed so others can audit them. It suits people who want a speed test whose methods and data are public.
Strengths
- Reports retransmission as well as speed and latency
- Openly licensed measurement tools
- Results feed a public dataset
Limitations
- Your IP address is retained and published with the results
- Fewer extras than commercial speed tests
Details
- Pricing
- FreeFree to use in the browser.
- License
- Proprietary
- Developer
- Measurement Lab
- Platforms
- Web
- How it runs
- Web application
- Account
- Not required
- Works offline
- No
- Best suited for
- People who want a speed test with open methods and public data
- Categories
- Network tools, Website testing
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Alternatives to M-Lab Speed Test
Compare allSoftware that can replace M-Lab Speed Test for an important use case, and what changes if you switch.
Speedtest by Ookla
An internet speed test for measuring download, upload and latency in the browser or apps.
Speedtest by Ookla offers browser and app tests with result history and nearby servers, but is closed source and does not publish an open dataset.
Cloudflare Speed Test
A browser-based internet speed test that measures throughput, latency, jitter and packet loss.
Cloudflare Speed Test adds jitter, packet loss and quality scores, sending your IP to Cloudflare instead of publishing it in a public dataset.
FAST.com
A minimal browser speed test that estimates your download speed in a few seconds.
FAST.com gives a quick download figure with optional latency, without retransmission reporting or an open measurement dataset.
nPerf
Internet speed test measuring download, upload and latency, in the browser and as apps.
nPerf adds desktop and mobile apps with streaming tests and a coverage map, closed source and tested only against nPerf's servers.
LibreSpeed
Self-hostable speed test with no Flash, Java or Websocket.
LibreSpeed is an LGPL-3.0 speed test you host yourself, so no third party keeps your IP, but results depend on where the server sits.
OpenSpeedTest
HTML5 speed test that can be self-hosted from a Docker image.
OpenSpeedTest is an open source HTML5 test that can be self-hosted from Docker, with accuracy tied to server location.
Waveform Bufferbloat Test
Browser test that measures internet speed and how latency rises under load.
Waveform Bufferbloat Test focuses on how latency rises under load, useful for games and calls, and is hosted on a retailer's site.
M-Lab Speed Test as an alternative
Listings that name M-Lab Speed Test as an alternative.
Speedtest CLI
Official Ookla speed test for the command line.
M-Lab Speed Test is a browser test with open methods and public data, and it publishes your IP address with the results.
Similar software
Related functionality, not necessarily a direct replacement.
iPerf3
Measures how fast a network link really is between two machines you control, which a speed test cannot.
RIPE Atlas
A global network of measurement probes for testing internet connectivity and reachability from many locations.
