
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.

Meld
ARTSIO
Beyond Compare
kdiff3
WinMerge
ARTLAS
ArtHub.ai
Diffuse is a small and simple text merge tool written in Python.

Which is more popular?
Based on our record, Apollo.io seems to be more popular. 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 | diffuse.sourceforge.net |
| Pricing | — | |
| 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
No analysis of Diffuse yet.
Walkthroughs and reviews on video.
Free software to find email addresses - apollo.io review
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How I Diffuse + Diffuser Review | Curly/Wavy Hair
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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 Diffuse. 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...
Diffuse is a free, simple and easy to use diff tool written in Python. It also offers two functionalities file comparison and version control. It also allows file editing, merging and display the difference between...
If you are looking for a simple, yet powerful graphical tool that helps to merge and comparing text files, Diffuse can be your best bet. It can easily compare random file parallelly while providing you the option to...
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
Tracking Diffuse since Mar 2021.
When comparing Apollo.io and Diffuse, you can also consider the following products.

ZoomInfo is a B2B database providing detailed business information on people and companies.
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Find all the email addresses related to a domain
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Beyond Compare allows you to compare files and folders.
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