Clay vs UserGems: who uses which
Customers, public proof and the companies that use both.
On usedby, 48 companies use Clay and 25 use UserGems. 2 companies use both, including Hubspot and Sendoso. Clay leads among the Marketing Tech companies on usedby that use either tool.Latest check Oct 8, 2026: 72 of 73 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Clay, UserGems, or both
Every company with a public proof for at least one of the two tools.
46
use only Clay
2
companies use both
23
use only UserGems
46 companies use only Clay, 23 use only UserGems and 2 use both, out of the 71 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for Clay yet.
Where it lands
Newest customers
No new customer since tracking started on October 8, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company |
|---|
 Hubspot |
 Sendoso |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Clay, UserGems or both: a share of the companies on usedby, not of the market.
Clay onlyBothUserGems only
More common with Clay
- Marketing Tech7 of the 9 Marketing Tech companies on usedby that use either tool use Clay, 2 of them alongside UserGems.
- Artificial Intelligence7 of the 7 Artificial Intelligence companies on usedby that use either tool use Clay.
- Cybersecurity4 of the 5 Cybersecurity companies on usedby that use either tool use Clay.
Source: confirmed and observed usedby lines. Job-post signals, the weakest proof level, are left out of these shares.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Clay
UserGemsWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Clay
new reps were revenue-generating 6x faster than before Clay
Pump
Vendor case study, clay.com, captured Oct 5, 2026
a 15% increase in enterprise meetings booked
Merge
Vendor case study, clay.com, captured Oct 5, 2026
UserGems
generated 276 sales opportunities worth over $18M in new business pipeline
Mimecast
Vendor case study, usergems.com, captured Oct 8, 2026
50-60% 50–60% of outbound meetings come from UserGems signals & Gem-E.
Accord
Vendor case study, usergems.com, captured Oct 8, 2026
Questions about Clay and UserGems
Which is used more, Clay or UserGems?
Clay has more customers on usedby: 48 against 25 for UserGems.
Do companies use both Clay and UserGems?
Yes. 2 companies use both on usedby, including Hubspot and Sendoso.
Who uses Clay?
48 companies on usedby, each with the public page that shows it. See who uses Clay.
Who uses UserGems?
25 companies on usedby, each with the public page that shows it. See who uses UserGems.
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 three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.