Clay48 customers
Used by 48 companies on usedby. 7 also use ZoomInfo. Compare ZoomInfo and Clay
Source: clay.com, latest capture Oct 5, 2026.
17 of the 67 ZoomInfo customers on usedby also use another tool on this list. The tools most often used by the same companies are Clay (7 shared, 48 customers in all), Common Room (5 shared, 68 customers in all), and HubSpot (4 shared, 51 customers in all).Latest check Oct 8, 2026: 395 of 412 public lines checked. Customer counts include every proof level, job-post signals included. Shared customers are counted on confirmed or observed lines on both tools.
17of 67
ZoomInfo customers also use another tool on this list
Clay shares the most companies with ZoomInfo: 7 companies use both.
Ranked by shared customers
Tools of the same or a competing category, from another vendor, used by at least one company that also uses ZoomInfo. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with ZoomInfo | Customers | Compare |
|---|---|---|---|---|
| 1 | Clay | 7 | 48 | Compare ZoomInfo vs Clay |
| 2 |  Common RoomMostly DevTools & Infrastructure (26) | 5 | 68 | Compare ZoomInfo vs Common Room |
| 3 |  HubSpot | 4 | 51 | Compare ZoomInfo vs HubSpot |
| 4 |  6sense | 3 | 32 | Compare ZoomInfo vs 6sense |
| 5 |  ApolloMostly HR & Recruiting (6) | 2 | 71 | Compare ZoomInfo vs Apollo |
| 6 |  UserGemsMostly Marketing Tech (4) | 2 | 25 | Compare ZoomInfo vs UserGems |
| 7 |  Attio | 1 | 20 | Compare ZoomInfo vs Attio |
Common Room68 customers
Used by 68 companies on usedby, 26 of them in DevTools & Infrastructure. 5 also use ZoomInfo. Compare ZoomInfo and Common Room
Source: commonroom.io, latest capture Oct 7, 2026.
HubSpot51 customers
Used by 51 companies on usedby. 4 also use ZoomInfo. Compare ZoomInfo and HubSpot
Source: hubspot.com, latest capture Oct 5, 2026.
6sense32 customers
Used by 32 companies on usedby. 3 also use ZoomInfo. Compare ZoomInfo and 6sense
Source: 6sense.com, latest capture Oct 5, 2026.
Apollo71 customers
Used by 71 companies on usedby, 6 of them in HR & Recruiting. 2 also use ZoomInfo. Compare ZoomInfo and Apollo
Source: apollo.io, latest capture Oct 5, 2026.
UserGems25 customers
Used by 25 companies on usedby, 4 of them in Marketing Tech. 2 also use ZoomInfo. Compare ZoomInfo and UserGems
Source: usergems.com, latest capture Oct 8, 2026.
Other Sales Prospecting & Enrichment tools on usedby
Same category, with public customers, but no company named with ZoomInfo yet.
Warmly30 customers
Switch signals
A company that left one vendor's page and appeared on another's.
No switch publishedA switch needs a departure from one vendor's page, seen on two checks in a row, and a dated arrival on another. usedby does not publish departures yet, so no switch shows here.
By industry
Which of these tools the companies on usedby use, by industry. Each row counts the companies of that industry on usedby that use at least one of these tools.
| Industry | Most used | Next | Companies |
|---|---|---|---|
| DevTools & Infrastructure | Common Room70% | Clay14% | 37 companies |
| Marketing Tech | Clay32% |  ZoomInfo27% | 22 companies |
| Data & Analytics | Common Room75% | 6sense15% | 20 companies |
| HR & Recruiting | Apollo40% | ZoomInfo33% | 15 companies |
| Cybersecurity | Common Room36% | Clay29% | 14 companies |
Read the first row as: among the 37 DevTools & Infrastructure companies on usedby that use one of these tools, 70% use Common Room. Shares can add up to more than 100% because some companies use two tools.
Questions about ZoomInfo alternatives
Which tool shares the most customers with ZoomInfo?
Clay: 7 companies use both on usedby. Clay has 48 customers in all. See who uses Clay.
Do ZoomInfo customers use other tools too?
17 of the 67 ZoomInfo customers on usedby also use another tool on this list. Clay shares the most: 7.
Which of ZoomInfo and its alternatives do DevTools & Infrastructure companies on usedby use?
Among the 37 DevTools & Infrastructure companies on usedby that use one of these tools, 70% use Common Room. Clay comes next, with 14%.
Which of ZoomInfo and its alternatives do Marketing Tech companies on usedby use?
Among the 22 Marketing Tech companies on usedby that use one of these tools, 32% use Clay. ZoomInfo comes next, with 27%.
How does usedby rank ZoomInfo alternatives?
Only tools of the same or a competing category, from another vendor, count. They are ranked by shared customers: companies with a confirmed or observed line on both tools, from public pages, most with a dated capture. Tools with no shared customer are listed apart. Customer counts include every proof level, job-post signals included.