Software Alternatives, Accelerators & Startups

Fast.com VS NetworkTests

Compare Fast.com VS NetworkTests and see what are their differences

Fast.com logo Fast.com

Quickly test your internet speed with this fast-loading speed test powered by Netflix.

NetworkTests logo NetworkTests

Measure packet loss, latency, jitter, and hop-by-hop performance with real network diagnostics, DNS leak, VPN detection & more โ€” delivered directly from your browser.
  • Fast.com Landing page
    Landing page //
    2023-09-23
  • NetworkTests Network Tests
    Network Tests //
    2026-03-14

NetworkTests.com goes beyond a basic speed test. Most tools like Speedtest use TCP, which retransmits lost packets โ€” reporting perfect delivery even when your network drops packets affecting video calls, gaming, and VoIP. NetworkTests.com uses WebRTC UDP to measure packet loss, latency, and jitter as real-time apps actually experience them. It also runs hop-by-hop path diagnostics from our servers to your connection edge โ€” directly from the browser, no install required.
Tools included: IP lookup, DNS lookup, DNS trace, AS lookup, reverse DNS, ping, traceroute, MTR, MAC lookup, VPN detection, DNS leak test, SSL proxy check.

Fast.com

Website
fast.com
Release Date
-
Startup details
Country
United States

NetworkTests

Release Date
2026 February
Startup details
Country
United States
State
California
Founder(s)
Naveen Kumar
Employees
1 - 9

Fast.com features and specs

  • Simplicity
    Fast.com has a clean and straightforward interface, making it very easy for users to test their internet speed without any distractions or complications.
  • Ad-Free
    The website does not contain any advertisements, providing a seamless and uninterrupted user experience.
  • Integration with Netflix
    Fast.com is created by Netflix, which ensures that the speed test results are optimized for streaming services, giving users a reliable indicator of how well they can stream content on the platform.
  • Quick Results
    The speed test begins automatically as soon as the website loads, providing users with rapid results without the need for additional clicks or inputs.
  • Mobile-Friendly
    Fast.com is optimized for mobile devices, making it easy for users to test their internet speed on smartphones and tablets.

Possible disadvantages of Fast.com

  • Limited Metrics
    Fast.com primarily focuses on download speed and does not provide as comprehensive a range of metrics as some other speed test websites, such as upload speed, latency, and jitter.
  • No Server Selection
    Users cannot choose which server to run the speed test against, which can sometimes result in less accurate measurements for specific network conditions.
  • No Historical Data
    Fast.com does not offer features to save or track historical speed test results, limiting users' ability to monitor their internet performance over time.
  • Lack of Customization
    There are no options to customize the test parameters, such as test duration or concurrency levels, which might be relevant for more advanced users.
  • Geared for Streaming
    Since Fast.com is tailored for Netflix streaming, it may not fully represent other usage scenarios, such as gaming or file downloads, which require different network performances.

NetworkTests features and specs

No features have been listed yet.

Analysis of Fast.com

Overall verdict

  • Yes, Fast.com is good for quickly assessing your internet download speed, particularly if you're interested in streaming quality on Netflix.

Why this product is good

  • Fast.com is a speed test tool developed by Netflix to help users evaluate their internet connection, particularly for streaming services. It is known for its simplicity, ease of use, and lack of ads, providing a quick way to measure download speeds using Netflix's servers.

Recommended for

  • Users who want a simple and ad-free internet speed test.
  • Anyone looking to check streaming speeds for Netflix.
  • People interested in basic information about their download speeds without detailed additional metrics.

Fast.com videos

Speedtest.net vs Fast.com | why different results ?

More videos:

  • Review - Measure your Internet speed with Fast.com
  • Review - Fast.com: Better than speedtest.net?

NetworkTests videos

No NetworkTests videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to Fast.com and NetworkTests)
Speed Test
100 100%
0% 0
Developer Tools
100 100%
0% 0
Networking
100 100%
0% 0
Cyber Security
0 0%
100% 100

Questions & Answers

As answered by people managing Fast.com and NetworkTests.

What makes your product unique?

NetworkTests's answer:

Most network speed tests use TCP, which automatically retransmits lost packets โ€” so they can report perfect results even when your connection is actively dropping packets that affect video calls, gaming, and VoIP.

NetworkTests.com uses WebRTC DataChannels in unreliable/unordered UDP mode to measure what real-time applications actually experience: packet loss, latency, and jitter โ€” metrics that TCP-based tests hide. It also performs hop-by-hop path diagnostics from our servers back to the client's connection edge using STUN-assisted UDP โ€” inbound path analysis directly from a browser, without any install or agent. This is unusual for a browser-based tool.
Beyond the core test, it includes 12 diagnostic tools: IP lookup, DNS lookup, DNS trace, AS lookup, reverse DNS, ping, traceroute, MTR, MAC lookup, VPN detection, DNS leak test, and SSL proxy / TLS interception check โ€” all free, no signup required.

Why should a person choose your product over its competitors?

NetworkTests's answer:

Traditional speed tests tell you how fast your connection is. NetworkTests.com tells you why your connection feels broken even when the speed test says it's fine.

Most competitors use TCP, which hides packet loss through automatic retransmission. NetworkTests.com uses UDP via WebRTC โ€” the same protocol used by video calls, gaming, and VoIP โ€” so the results reflect what your applications actually experience. Key reasons to choose NetworkTests.com: - Accurate packet loss measurement โ€” UDP doesn't retransmit, so real packet loss is visible instead of hidden - Hop-by-hop path diagnostics โ€” pinpoints exactly which router on the path is causing the problem, directly from a browser session - All-in-one diagnostics โ€” 12 tools in one place covering network quality, DNS, privacy, and security checks - Privacy tools โ€” DNS leak test, VPN detection, and SSL proxy check in one place, useful for verifying your privacy setup - No friction โ€” no signup, no install, no extensions. Open the browser and run the test - Free โ€” everything is free with no paywalled features

How would you describe the primary audience of your product?

NetworkTests's answer:

NetworkTests.com serves anyone who wants to understand what is really happening on their network, not just how fast it is.

Primary audiences: - Home users โ€” people experiencing choppy video calls, laggy gaming, or buffering streams despite good speed test results. NetworkTests.com helps them identify the real cause โ€” packet loss, jitter, or a bad hop on the network path - Network engineers & sysadmins โ€” professionals who need UDP-based metrics, hop-by-hop MTR analysis, and real packet loss data for diagnosing and validating network performance - IT teams โ€” diagnosing connectivity issues across office networks, validating ISP performance, and pinpointing bottlenecks with data - Privacy & security conscious users โ€” people who want to verify their VPN is working correctly, check for DNS leaks, or detect whether their HTTPS traffic is being intercepted by a corporate or ISP proxy - Developers & researchers โ€” anyone building or testing applications that depend on network quality and need accurate, protocol-level diagnostics directly from a browser

What's the story behind your product?

NetworkTests's answer:

I built NetworkTests.com out of personal frustration.

I kept running Speedtest and seeing great numbers โ€” solid download speeds, low ping โ€” while my video calls were still freezing and my connection felt unreliable. The speed test said everything was fine, but clearly something was wrong. After digging into it, I discovered the problem: Speedtest uses TCP, which automatically retransmits lost packets. It literally cannot see packet loss. My connection was dropping packets, but TCP was quietly hiding them โ€” so the test looked perfect while real-time applications suffered.
I wanted a tool that measured what my applications actually experienced. Something that used UDP โ€” the same protocol video calls, gaming, and VoIP use โ€” and showed me the real numbers: packet loss, jitter, and latency without TCP's masking.
I also wanted hop-by-hop visibility โ€” not just "your connection is bad" but "this specific router on the path is dropping packets." That led to building inbound MTR diagnostics using STUN-assisted UDP through NAT, directly from the browser โ€” something I hadn't seen in other browser-based tools.
Over time it grew into a full diagnostics platform โ€” DNS lookup, DNS trace, VPN detection, DNS leak testing, SSL proxy detection, traceroute, ping, MTR, and more โ€” because these tools belong together when you're trying to diagnose a real network problem.
The goal is simple: give anyone โ€” home user or network engineer โ€” the tools to understand what is actually happening on their connection, for free, without installing anything.

Which are the primary technologies used for building your product?

NetworkTests's answer:

NetworkTests.com is built on modern web technologies that enable real-time network measurements directly in the browser โ€” no plugins, extensions, or installations required.
The core network quality test runs entirely client-server using browser-native APIs, enabling UDP-style packet loss, latency, and jitter measurements without any software install. The backend infrastructure is distributed across three geographic regions, allowing users to test against multiple server locations and get accurate hop-by-hop path diagnostics. All diagnostic tools โ€” DNS lookup, traceroute, MTR, ping, VPN detection, DNS leak test, SSL proxy check, and more โ€” run server-side and return results in real time through the browser interface.

Who are some of the biggest customers of your product?

NetworkTests's answer:

Since NetworkTests.com is a free tool launched in February 2026 with no paid plans or signups, you don't have named customers yet. I'd suggest answering honestly:

NetworkTests.com is a free, public tool launched in February 2026. It does not require signup or registration, so we don't track named customers.
Our users include home users diagnosing connectivity issues, network engineers and sysadmins troubleshooting infrastructure, IT teams validating ISP performance, and privacy-conscious users verifying their VPN and DNS configurations.

User comments

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Social recommendations and mentions

Based on our record, Fast.com seems to be more popular. It has been mentiond 1688 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Fast.com mentions (1688)

  • I Built a Fast.com for LLMs: Introducing iamspeed.dev
    That is exactly how fast.com works for internet speed tests. You open it, it runs, you see a number. Done. - Source: dev.to / 17 days ago
  • Streaming the 2026 Winter Olympics: A Developer's Guide to Live Sports IPTV
    Pro tip: Run a speed test immediately before the event. Don't trust your "up to 100 Mbps" ISP claim. Use fast.com or speedtest.net to get real numbers. - Source: dev.to / 4 months ago
  • Downdetector, Speedtest sold to IT service provider Accenture in $1.2B deal
    Speedtest has always seemed incredibly sketchy to me, I donโ€™t know if others share this sentiment. https://fast.com completed the test faster than speedtest loads the site. - Source: Hacker News / 4 months ago
  • SLOWWWWWWWWWWWWWW VPN IPSEC HOW TO CONFIGURATION HELPPPP
    Is this for remote access VPN? If so, what kind of bandwidth are you seeing on a speed test site like fast.com (with the VPN off) compared to the VPN bandwidth you're experiencing? Source: over 2 years ago
  • I am a MacOS user, new to windows and my wifi wonโ€™t load fast enough; are these updates the issue?
    What result do you get from fast.com ? What about if you ping your router? Source: over 2 years ago
View more

NetworkTests mentions (0)

We have not tracked any mentions of NetworkTests yet. Tracking of NetworkTests recommendations started around Mar 2026.

What are some alternatives?

When comparing Fast.com and NetworkTests, you can also consider the following products

Speedtest.net - Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla

Packet Loss Test - Test your Internet connection for lost packets or high latency to ensure that your gaming and...

Testmy.net - Accurately test your Internet connection speed with this powerful broadband speed test. Improve your bandwidth speed with the truth.

DNS leak test - Test your connection for DNS leaks.

Speed Test by Cloudflare - speed.cloudflare.com is a tool that allows you to measure the speed and consistency of your connection to the Internet. You can use it to verify that the speed your ISP promised you is the speed you are getting.

SpeedOf.Me - SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed!