UserGems vs ZoomInfo: who uses which
Customers, public proof and the companies that use both.
On usedby, 25 companies use UserGems and 67 use ZoomInfo. 2 companies use both, including Salesloft and Sendoso. ZoomInfo leads among the Marketing Tech companies on usedby that use either tool.Latest check Oct 8, 2026: 92 of 92 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 UserGems, ZoomInfo, or both
Every company with a public proof for at least one of the two tools.
23
use only UserGems
2
companies use both
65
use only ZoomInfo
23 companies use only UserGems, 65 use only ZoomInfo and 2 use both, out of the 90 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 8, 2026.
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 |
|---|
 Salesloft |
 Sendoso |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use UserGems, ZoomInfo or both: a share of the companies on usedby, not of the market.
UserGems onlyBothZoomInfo only
More common with ZoomInfo
- Marketing Tech6 of the 9 Marketing Tech companies on usedby that use either tool use ZoomInfo, 1 of them alongside UserGems.
- HR & Recruiting5 of the 5 HR & Recruiting companies on usedby that use either tool use ZoomInfo.
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.
UserGemsZoomInfoWhat customers report
Results as the vendor or the customer published them, with the source and the date.
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
ZoomInfo
Annual revenue is up by more than 1900%
Deal IQ
Vendor case study, zoominfo.com, published Jul 29, 2025
4X faster program launch: what previously took nearly four months for 8 teams now takes just one month for 22 teams.
monday.com
Vendor case study, zoominfo.com, published Apr 29, 2026
Questions about UserGems and ZoomInfo
Which is used more, UserGems or ZoomInfo?
ZoomInfo has more customers on usedby: 67 against 25 for UserGems.
Do companies use both UserGems and ZoomInfo?
Yes. 2 companies use both on usedby, including Salesloft and Sendoso.
Who uses UserGems?
25 companies on usedby, each with the public page that shows it. See who uses UserGems.
Who uses ZoomInfo?
67 companies on usedby, each with the public page that shows it. See who uses ZoomInfo.
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.