# Prospecting data & signals tools used by Marketing & Sales companies

usedby lists 59 Marketing & Sales companies using 7 Prospecting data & signals tools. The most used is Apollo: 14 of the 59 Marketing & Sales companies on usedby, every proof level counted. These are counts of the companies usedby tracks, not a market share. Data as of 2026-10-25.

## Largest and best-proven users

Two labelled views of the same companies. Neither is a score.

### Largest companies

By employee range. Size known for 33 of 59.

| Company | Proof | Employees | Tools | Last check |
|---|---|---|---|---|
| [Adobe](https://www.usedby.ai/companies/adobe.md) | Observed | 10,001+ | ZoomInfo | 2026-10-24 |
| [HubSpot](https://www.usedby.ai/companies/hubspot.md) | Observed | 5,001–10,000 | UserGems, Clay, Common Room | 2026-10-25 |
| [Canva](https://www.usedby.ai/companies/canva.md) | Observed | 5,001–10,000 | ZoomInfo, Clay | 2026-10-24 |

### Strongest proof

Confirmed or declared: 18 of 59. This view filters what you read, never what is counted.

| Company | Proof | Employees | Tools | Last check |
|---|---|---|---|---|
| [Frontify](https://www.usedby.ai/companies/frontify.md) | Confirmed | 201–1,000 | UserGems | 2026-10-25 |
| [Sendoso](https://www.usedby.ai/companies/sendoso.md) | Confirmed | 201–1,000 | UserGems, ZoomInfo, Clay | 2026-10-25 |
| [Accord](https://www.usedby.ai/companies/accord.md) | Confirmed | Unknown | Apollo, UserGems | 2026-10-25 |

## Ranking

Tools ranked by the companies of the 59 Marketing & Sales companies on usedby that use them. Each company counts once per tool, at its strongest proof. Ties go to more confirmed, then declared, then observed companies.

| # | Tool | Companies | Confirmed | Declared | Observed | Job posts only | Last check |
|---|---|---|---|---|---|---|---|
| 1 | [Apollo](https://www.usedby.ai/tools/apollo.md) | 14 | 0 | 0 | 14 | 0 | 2026-10-24 |
| 2 | [UserGems](https://www.usedby.ai/tools/usergems.md) | 12 | 7 | 0 | 5 | 0 | 2026-10-25 |
| 3 | [ZoomInfo](https://www.usedby.ai/tools/zoominfo.md) | 12 | 1 | 0 | 11 | 0 | 2026-10-24 |
| 4 | [Warmly](https://www.usedby.ai/tools/warmly.md) | 10 | 6 | 0 | 4 | 0 | 2026-10-24 |
| 5 | [Clay](https://www.usedby.ai/tools/clay.md) | 8 | 4 | 0 | 4 | 0 | 2026-10-24 |
| 6 | [6sense](https://www.usedby.ai/tools/6sense.md) | 8 | 0 | 0 | 8 | 0 | 2026-10-24 |
| 7 | [Common Room](https://www.usedby.ai/tools/common-room.md) | 7 | 1 | 0 | 6 | 0 | 2026-10-24 |

## Customers per tool

Every line is a customer, at one of three proof levels: confirmed (a case study, a named quote, a press release, or the company's own public account of using the tool (its own site, or a post by one of its executives, VP or above)), observed (the vendor shows the company on its own pages) or signal (a job post shows the company's employees use the tool, the weakest proof). A line the company declared to usedby itself, or that it lists as a sub-processor on its own legal page, is marked declared. A signal is never a case study or a vendor listing. Strongest proof first. "Last check" is the later of the line's re-verification and its latest capture.

| Tool | Company | Proof | Source | Last check |
|---|---|---|---|---|
| Apollo | [Accord](https://www.usedby.ai/companies/accord.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Aligned](https://www.usedby.ai/companies/aligned.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Customer.io](https://www.usedby.ai/companies/customer-io.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [GTM Heroes](https://www.usedby.ai/companies/gtm-heroes.md) | Observed | [apollo.io](https://www.apollo.io/wall-of-love), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Idomoo](https://www.usedby.ai/companies/idomoo.md) | Observed | [apollo.io](https://www.apollo.io/wall-of-love), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Leadium](https://www.usedby.ai/companies/leadium.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Lemonlight](https://www.usedby.ai/companies/lemonlight.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Popl](https://www.usedby.ai/companies/popl.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [SendtoWin](https://www.usedby.ai/companies/sendtowin.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Superside](https://www.usedby.ai/companies/superside.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [TransPerfect](https://www.usedby.ai/companies/transperfect.md) | Observed | [apollo.io](https://www.apollo.io/wall-of-love), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Mutiny](https://www.usedby.ai/companies/mutiny.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| Apollo | [Power Digital](https://www.usedby.ai/companies/power-digital.md) | Observed | [apollo.io](https://www.apollo.io/wall-of-love), captured 2026-10-24 | 2026-10-24 |
| Apollo | [GTM Ops](https://www.usedby.ai/companies/gtm-ops.md) | Observed | [apollo.io](https://www.apollo.io/magazine/articles/customer-stories), captured 2026-10-24 | 2026-10-24 |
| UserGems | [Outreach](https://www.usedby.ai/companies/outreach.md) | Confirmed | [usergems.com](https://www.usergems.com/customers/outreach), captured 2026-10-08 | 2026-10-25 |
| UserGems | [Accord](https://www.usedby.ai/companies/accord.md) | Confirmed | [usergems.com](https://www.usergems.com/customers/accord), captured 2026-10-08 | 2026-10-25 |
| UserGems | [CaptivateIQ](https://www.usedby.ai/companies/captivateiq.md) | Confirmed | [usergems.com](https://www.usergems.com/customers/sendoso-2025), captured 2026-10-19 | 2026-10-25 |
| UserGems | [OneSignal](https://www.usedby.ai/companies/onesignal.md) | Confirmed | [usergems.com](https://www.usergems.com/customers/onesignal-2025), captured 2026-10-08 | 2026-10-25 |
| UserGems | [Sendoso](https://www.usedby.ai/companies/sendoso.md) | Confirmed | [usergems.com](https://www.usergems.com/customers/sendoso-2025), captured 2026-10-25 | 2026-10-25 |
| UserGems | [UserTesting](https://www.usedby.ai/companies/usertesting.md) | Confirmed | [usergems.com](https://www.usergems.com/customers/usertesting), captured 2026-10-08 | 2026-10-25 |
| UserGems | [Frontify](https://www.usedby.ai/companies/frontify.md) | Confirmed | [usergems.com](https://www.usergems.com/customers/sendoso-2025), captured 2026-10-25 | 2026-10-25 |
| UserGems | [HubSpot](https://www.usedby.ai/companies/hubspot.md) | Observed | [usergems.com](https://www.usergems.com/), captured 2026-10-25 | 2026-10-25 |
| UserGems | [Gong](https://www.usedby.ai/companies/gong.md) | Observed | [usergems.com](https://www.usergems.com/), captured 2026-10-25 | 2026-10-25 |
| UserGems | [Bynder](https://www.usedby.ai/companies/bynder.md) | Observed | [usergems.com](https://www.usergems.com/customers), captured 2026-10-25 | 2026-10-25 |
| UserGems | [Metadata](https://www.usedby.ai/companies/metadata.md) | Observed | [usergems.com](https://www.usergems.com/customers), captured 2026-10-25 | 2026-10-25 |
| UserGems | [Salesloft](https://www.usedby.ai/companies/salesloft.md) | Observed | [usergems.com](https://www.usergems.com/), captured 2026-10-25 | 2026-10-25 |
| ZoomInfo | [Clum Creative](https://www.usedby.ai/companies/clum-creative.md) | Confirmed | [zoominfo.com](https://www.zoominfo.com/about/case-studies/clum-creative), captured 2026-10-08 | 2026-10-24 |
| ZoomInfo | [Adobe](https://www.usedby.ai/companies/adobe.md) | Observed | [zoominfo.com](https://www.zoominfo.com/pricing), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [Canva](https://www.usedby.ai/companies/canva.md) | Observed | [zoominfo.com](https://www.zoominfo.com/testimonials), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [SurveyMonkey](https://www.usedby.ai/companies/surveymonkey.md) | Observed | [zoominfo.com](https://www.zoominfo.com/pricing), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [Clari](https://www.usedby.ai/companies/clari.md) | Observed | [zoominfo.com](https://www.zoominfo.com/about/case-studies), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [demandDrive](https://www.usedby.ai/companies/demanddrive.md) | Observed | [zoominfo.com](https://www.zoominfo.com/testimonials), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [Impartner](https://www.usedby.ai/companies/impartner.md) | Observed | [zoominfo.com](https://www.zoominfo.com/testimonials), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [Instapage](https://www.usedby.ai/companies/instapage.md) | Observed | [zoominfo.com](https://www.zoominfo.com/pricing), captured 2026-10-08 | 2026-10-08 |
| ZoomInfo | [Salesloft](https://www.usedby.ai/companies/salesloft.md) | Observed | [zoominfo.com](https://www.zoominfo.com/), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [Seismic](https://www.usedby.ai/companies/seismic.md) | Observed | [zoominfo.com](https://www.zoominfo.com/pricing), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [Semrush](https://www.usedby.ai/companies/semrush.md) | Observed | [zoominfo.com](https://www.zoominfo.com/testimonials), captured 2026-10-24 | 2026-10-24 |
| ZoomInfo | [Sendoso](https://www.usedby.ai/companies/sendoso.md) | Observed | [zoominfo.com](https://www.zoominfo.com/testimonials), captured 2026-10-24 | 2026-10-24 |
| Warmly | [Alpharun](https://www.usedby.ai/companies/alpharun.md) | Confirmed | [warmly.ai](https://www.warmly.ai/p/customers/reviews), captured 2026-10-24 | 2026-10-24 |
| Warmly | [Alysio](https://www.usedby.ai/companies/alysio.md) | Confirmed | [warmly.ai](https://www.warmly.ai/p/case-studies/aaron-mcreynolds), captured 2026-10-08 | 2026-10-08 |
| Warmly | [Brainstory](https://www.usedby.ai/companies/brainstory.md) | Confirmed | [warmly.ai](https://www.warmly.ai/p/case-studies/lilly-chen), captured 2026-10-08 | 2026-10-08 |
| Warmly | [Conversion](https://www.usedby.ai/companies/conversion.md) | Confirmed | [warmly.ai](https://www.warmly.ai/p/customers/reviews), captured 2026-10-24 | 2026-10-24 |
| Warmly | [Dyspatch](https://www.usedby.ai/companies/dyspatch.md) | Confirmed | [warmly.ai](https://www.warmly.ai/p/customers/reviews), captured 2026-10-24 | 2026-10-24 |
| Warmly | [Orum](https://www.usedby.ai/companies/orum.md) | Confirmed | [warmly.ai](https://www.warmly.ai/p/customers/reviews), captured 2026-10-24 | 2026-10-24 |
| Warmly | [Pendo](https://www.usedby.ai/companies/pendo.md) | Observed | [warmly.ai](https://www.warmly.ai/), captured 2026-10-24 | 2026-10-24 |
| Warmly | [11X](https://www.usedby.ai/companies/11x.md) | Observed | [warmly.ai](https://www.warmly.ai/), captured 2026-10-24 | 2026-10-24 |
| Warmly | [Metadata](https://www.usedby.ai/companies/metadata.md) | Observed | [warmly.ai](https://www.warmly.ai/p/customers/reviews), captured 2026-10-24 | 2026-10-24 |
| Warmly | [Simpli.fi](https://www.usedby.ai/companies/simpli-fi.md) | Observed | [warmly.ai](https://www.warmly.ai/), captured 2026-10-24 | 2026-10-24 |
| Clay | [Intercom](https://www.usedby.ai/companies/intercom.md) | Confirmed | [clay.com](https://www.clay.com/customers/open-ai), captured 2026-10-24 | 2026-10-24 |
| Clay | [Northbeam](https://www.usedby.ai/companies/northbeam.md) | Confirmed | [clay.com](https://www.clay.com/customers/northbeam), captured 2026-10-10 | 2026-10-24 |
| Clay | [Sendoso](https://www.usedby.ai/companies/sendoso.md) | Confirmed | [clay.com](https://www.clay.com/customers/open-ai), captured 2026-10-24 | 2026-10-24 |
| Clay | [Exit Five](https://www.usedby.ai/companies/exit-five.md) | Confirmed | [clay.com](https://www.clay.com/customers/exit-five), captured 2026-10-10 | 2026-10-24 |
| Clay | [Canva](https://www.usedby.ai/companies/canva.md) | Observed | [clay.com](https://www.clay.com/customers), captured 2026-10-24 | 2026-10-24 |
| Clay | [HubSpot](https://www.usedby.ai/companies/hubspot.md) | Observed | [clay.com](https://www.clay.com/customers), captured 2026-10-24 | 2026-10-24 |
| Clay | [Pendo](https://www.usedby.ai/companies/pendo.md) | Observed | [clay.com](https://www.clay.com/customers), captured 2026-10-24 | 2026-10-24 |
| Clay | [Mutiny](https://www.usedby.ai/companies/mutiny.md) | Observed | [clay.com](https://www.clay.com/pricing), captured 2026-10-05 | 2026-10-05 |
| 6sense | [Clari](https://www.usedby.ai/companies/clari.md) | Observed | [6sense.com](https://6sense.com/customer-stories/), captured 2026-10-24 | 2026-10-24 |
| 6sense | [Fullstory](https://www.usedby.ai/companies/fullstory.md) | Observed | [6sense.com](https://6sense.com/customer-stories/), captured 2026-10-24 | 2026-10-24 |
| 6sense | [Bynder](https://www.usedby.ai/companies/bynder.md) | Observed | [6sense.com](https://6sense.com/) | Not dated |
| 6sense | [Green Hat](https://www.usedby.ai/companies/green-hat.md) | Observed | [6sense.com](https://6sense.com/customer-stories/), captured 2026-10-15 | 2026-10-15 |
| 6sense | [Khoros](https://www.usedby.ai/companies/khoros.md) | Observed | [6sense.com](https://6sense.com/customer-stories/), captured 2026-10-24 | 2026-10-24 |
| 6sense | [Vendavo](https://www.usedby.ai/companies/vendavo.md) | Observed | [6sense.com](https://6sense.com/customer-stories/), captured 2026-10-24 | 2026-10-24 |
| 6sense | [Xactly](https://www.usedby.ai/companies/xactly.md) | Observed | [6sense.com](https://6sense.com/customer-stories/), captured 2026-10-24 | 2026-10-24 |
| 6sense | [Rithum](https://www.usedby.ai/companies/rithum.md) | Observed | [6sense.com](https://6sense.com/customers) | Not dated |
| Common Room | [Jasper](https://www.usedby.ai/companies/jasper.md) | Confirmed | [commonroom.io](https://www.commonroom.io/customers/atlan/), captured 2026-10-17 | 2026-10-24 |
| Common Room | [HubSpot](https://www.usedby.ai/companies/hubspot.md) | Observed | [commonroom.io](https://www.commonroom.io/customers/), captured 2026-10-24 | 2026-10-24 |
| Common Room | [Zendesk](https://www.usedby.ai/companies/zendesk.md) | Observed | [commonroom.io](https://www.commonroom.io/customers/), captured 2026-10-24 | 2026-10-24 |
| Common Room | [Amsive](https://www.usedby.ai/companies/amsive.md) | Observed | [commonroom.io](https://www.commonroom.io/customers/), captured 2026-10-24 | 2026-10-24 |
| Common Room | [Arcade](https://www.usedby.ai/companies/arcade.md) | Observed | [commonroom.io](https://www.commonroom.io/customers/), captured 2026-10-24 | 2026-10-24 |
| Common Room | [Kustomer](https://www.usedby.ai/companies/kustomer.md) | Observed | [commonroom.io](https://www.commonroom.io/customers/), captured 2026-10-24 | 2026-10-24 |
| Common Room | [Trengo](https://www.usedby.ai/companies/trengo.md) | Observed | [commonroom.io](https://www.commonroom.io/customers/), captured 2026-10-24 | 2026-10-24 |

## Method

Public customer lines of active Prospecting data & signals tools at companies classified in Marketing & Sales. No software vendor had to be left out. Company mix by strongest proof: 18 confirmed, 0 declared, 41 observed and 0 signals.

## Questions

### Which Prospecting data & signals tools do Marketing & Sales companies use most?

Apollo leads: 14 of the 59 Marketing & Sales companies on usedby that use Prospecting data & signals tools use it. Next: UserGems (12), ZoomInfo (12), Warmly (10), and Clay (8).

### How many Marketing & Sales companies use Prospecting data & signals tools?

59 Marketing & Sales companies on usedby use at least one of 7 Prospecting data & signals tools. It counts the companies usedby tracks.

### What proof backs these lines?

Of the 59 companies, each counted at its strongest proof: 18 confirmed, 0 declared, 41 observed and 0 known from a job post.

### How does usedby build this ranking?

usedby counts each Marketing & Sales company once per tool, from public proof: case studies, press releases, the company's own site or its declaration to usedby, vendor customer pages and job posts. Every line shows its proof and the date usedby last checked it.

Prospecting data & signals by industry within Marketing & Sales: [Marketing Tech](https://www.usedby.ai/companies/industry/marketing-tech-martech/sales-prospecting-enrichment.md) (24) · [Sales Tech & CRM](https://www.usedby.ai/companies/industry/sales-tech-crm/sales-prospecting-enrichment.md) (20)

Industry page: https://www.usedby.ai/companies/industry/marketing-sales.md · Category page: https://www.usedby.ai/tools/category/sales-prospecting-enrichment.md

---
Source: https://www.usedby.ai/companies/industry/marketing-sales/sales-prospecting-enrichment · How we check: https://www.usedby.ai/methodology