
ZoomInfo
Lusha
Hunter.io
Instantly.ai
lemlist
Clearbit
Snov.io
Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.

Fast.com
Speedtest.net
LibreSpeed
SpeedOf.Me
Testmy.net
nPerf
Speed Test by Cloudflare
Broadband Internet Speed Test Unlocked!

Which is more popular?
Based on our record, Apollo.io should be more popular than OpenSpeedTest. It has been mentioned 69 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | apollo.io | openspeedtest.com |
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| Company | Startup from the United States | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Free software to find email addresses - apollo.io review
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SPEED TEST ON ANY DEVICE // OpenSpeedTest Tutorial
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Apollo.io and OpenSpeedTest. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


The right Apollo alternative fixes the part of Apollo that costs you meetings. Bad data calls for a better database, and a missing channel calls for a specialist tool next to Apollo.
What is the best AI prospecting tool for B2B sales in 2026? The best tool depends on your team's specific situation. toflow.ai is a strong fit for multi-channel outreach across email, LinkedIn, and WhatsApp, and is...
Apollo is a full sales engagement platform — sequences, email tracking, dialer, and a contact database. Their strength is email addresses, not phone numbers. Phone number coverage exists but it's thinner than...
We have no reviews of OpenSpeedTest yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Personal email domains destroy this. Clearbit's Enrichment API returns a null company when it hits gmail.com. Apollo routes personal domains straight to a consumer bucket and skips B2B fields entirely. Even PDL's /person/enrich endpoint... - Source: dev.to / 6 months ago
A few things worth flagging: PDL beats Clearbit's historical rates for US and Western European companies, but drops to ~52% match rate for Japan and South Korea specifically. Apollo underperforms on raw company matching but returns... - Source: dev.to / 6 months ago
One thing comparison guides consistently get wrong: Clay is not an enrichment API. It's a waterfall orchestration tool that calls People Data Labs, Apollo, Clearbit, and others in sequence for you. It's useful, but it adds 2–8 seconds of... - Source: dev.to / 6 months ago
All it takes to defeat the business model is https://openspeedtest.com/. - Source: Hacker News / 5 months ago
Try again using https://openspeedtest.com/ on a wired computer. Source: almost 3 years ago
Are you in the US? I would try to run tests to the same place to establish consistency in your data (openspeedtest.com). Source: over 3 years ago
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Find all the email addresses related to a domain
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