Common Room68 customers
Used by 68 companies on usedby, 26 of them in DevTools & Infrastructure. 7 also use Clay. Compare Clay and Common Room
Source: commonroom.io, latest capture Oct 7, 2026.
16 of the 48 Clay customers on usedby also use another tool on this list. The tools most often used by the same companies are Common Room (7 shared, 68 customers in all), ZoomInfo (7 shared, 67 customers in all), and Apollo (4 shared, 71 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.
16of 48
Clay customers also use another tool on this list
Common Room shares the most companies with Clay: 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 Clay. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with Clay | Customers | Compare |
|---|---|---|---|---|
| 1 | Common RoomMostly DevTools & Infrastructure (26) | 7 | 68 | Compare Clay vs Common Room |
| 2 |  ZoomInfo | 7 | 67 | Compare Clay vs ZoomInfo |
| 3 |  ApolloMostly HR & Recruiting (6) | 4 | 71 | Compare Clay vs Apollo |
| 4 |  UserGemsMostly Marketing Tech (4) | 2 | 25 | Compare Clay vs UserGems |
| 5 |  Warmly | 1 | 30 | Compare Clay vs Warmly |
| 6 |  Attio | 1 | 20 | Compare Clay vs Attio |
ZoomInfo67 customers
Used by 67 companies on usedby. 7 also use Clay. Compare Clay and ZoomInfo
Latest capture across its sources: Oct 8, 2026.
Apollo71 customers
Used by 71 companies on usedby, 6 of them in HR & Recruiting. 4 also use Clay. Compare Clay 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 Clay. Compare Clay and UserGems
Source: usergems.com, latest capture Oct 8, 2026.
Warmly30 customers
Used by 30 companies on usedby. 1 also uses Clay. Compare Clay and Warmly
Source: warmly.ai, latest capture Oct 8, 2026.
Attio20 customers
Used by 20 companies on usedby. 1 also uses Clay. Compare Clay and Attio
Source: attio.com, latest capture Oct 5, 2026.
Other Sales Prospecting & Enrichment tools on usedby
Same category, with public customers, but no company named with Clay yet.
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 Clay alternatives
Which tool shares the most customers with Clay?
Common Room: 7 companies use both on usedby. Common Room has 68 customers in all. See who uses Common Room.
Do Clay customers use other tools too?
16 of the 48 Clay customers on usedby also use another tool on this list. Common Room shares the most: 7.
Which of Clay 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 Clay 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 Clay 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.