If you’ve ever run an online speed test and wondered whether the results were throttled, overloaded, or influenced by ads, you’re not alone. That’s exactly why these free speed test tools were set up — clean, accurate, and available to everyone.
All three test tools run on a Debian-based dedicated server inside a professional datacenter, with a 1 Gbps bidirectional connection and a 100 Gbps uplink backbone. Every test you perform is backed by real infrastructure made for consistency, not marketing.
Whether you’re tuning your home Wi-Fi, testing a GL.iNet router, verifying a VPN provider, or checking your fiber connection, these tools are here to give you the most honest results possible.
Available Free Speed Test Tools I host
1. LibreSpeed (Browser-Based, No Ads, No Tracking)
URL: https://librespeed.twy4.us/
LibreSpeed is a lightweight, open-source speed test that provides:
- Download & upload speeds
- Latency & jitter
- No tracking, no ads, no clutter
Perfect for quick tests on desktops, phones, tablets, and routers with captive portal browsers. Because the entire test is client-based, results stay accurate and responsive.
2. OpenSpeedTest (High Load, Realistic Traffic Simulation)
URL: https://ost.twy4.us/
OpenSpeedTest generates heavier, more realistic traffic patterns that simulate real-world usage. It’s especially useful for:
- Wi-Fi 6, Wi-Fi 7, and MLO testing
- Router throughput & stress tests
- VPN vs non-VPN performance
- Mesh system tuning
If you want to know how your network behaves under load, this is the tool to use.
If you want to install OpenSpeedTest directly on your OpenWRT or GL.iNet router, we have a script for that also: https://github.com/phantasm22/OpenSpeedTestServer
3. iPerf3 (Command-Line Testing for Advanced Users)
Hostname: iperf3.twy4.us
Port: 5201:TCP
iPerf3 is one of the most accurate ways to test raw throughput. Engineers and homelab users rely on it for:
- Multi-stream performance
- Reverse-direction testing
- Packet loss & retransmissions
- VPN benchmarking
- Wi-Fi 6/6E/7 performance
- LAN vs WAN throughput
Example usage:iperf3 -c iperf3.twy4.us -t 30
Reverse test:
iperf3 -c iperf3.twy4.us -t 30 -R
Here are a couple more servers you can use, test results may vary. https://iperf.fr/iperf-servers.php
Powered by a High-Performance Datacenter
All three services run on a hardened Debian server with:
- 1 Gbps symmetrical port to server
- 100 Gbps datacenter uplink
- Dedicated CPU, RAM, and SSD storage
- Enterprise routing & peering
- Low-latency connection based in Virginia, U.S.
- No throttling