On usedby, 20 companies use Exa and 9 use You.com. 1 company uses both, including Amazon. Exa leads among the DevTools & Infrastructure companies on usedby that use either tool.Latest check Nov 12, 2026: 29 of 29 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses Exa, You.com, or both
Every company with a public proof for at least one of the two tools.
19
listed for Exa only
1
company uses both
8
listed for You.com only
On usedby, 19 companies are listed for Exa only, 8 are listed for You.com only and 1 uses both, out of the 28 companies listed for at least one. An absent listing does not prove non-use.
Where it lands
Recently publicly listed customers
No new public customer listing since tracking started on October 7, 2026.
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, You.com |
|---|---|
 Amazon | On or before Oct 2025 |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Vendor facts checked: Exa, 0 of 4; You.com, 1 of 4. Missing facts remain unverified, not absent features.
Exa
You.comWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Exa
More than 9.1M Search requests to date
HockeyStack
Vendor case study, exa.ai, captured Nov 12, 2026
More than 7.2M Search requests to date: 11x uses Exa Search for high-volume prospect and account research.
11X
Vendor case study, exa.ai, captured Nov 12, 2026
You.com
No reviewed story for You.com yet.
Questions about Exa and You.com
Which is used more, Exa or You.com?
Exa has more customers on usedby: 20 against 9 for You.com.
Do companies use both Exa and You.com?
Yes. 1 company uses both on usedby, including Amazon.
Who uses Exa?
20 companies on usedby, each with the public page that shows it. See who uses Exa.
Who uses You.com?
9 companies on usedby, each with the public page that shows it. See who uses You.com.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of four proof levels: confirmed, declared by the company itself, observed or signal (a job post, the weakest). A company counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.