Outreach sequences, dialers and autonomous AI SDRs that contact prospects and book meetings.
286
companies on usedby use a tool of this category
286 companies on usedby use at least one of the 13 tools in this category with a public customer. Amplemarket leads with 59 companies. Then come Nooks (55) and Qualified (38). 19 companies run two of these tools or more. The most common pair is Nooks with 1mind (3 companies).Latest check Oct 14, 2026: 307 of 311 public lines checked. Counts are of companies on usedby, not of the whole market: we list a company when a public page shows its AI tools.
Companies with a public line for each tool. Job-post signals count and are drawn apart in the proof bar.
| # | Tool | Customers | Proof |
|---|---|---|---|
| 1 |  Amplemarket | 59 | |
| 2 | Nooks | 55 | |
| 3 |  Qualified | 38 | |
| 4 |  Outreach | 34 | |
| 5 |  11x | 22 | |
| 6 |  1mind | 20 | |
| 7 |  Rox | 19 | |
| 7 |  Salesforge | 19 | |
| 9 |  Salesloft | 17 | |
| 10 |  Actively | 11 | |
| 11 |  Artisan | 8 | |
| 12 |  Lavender | 6 | |
| 13 |  Regie.ai | 3 | |
 Conversica | — |
19 companies run two of these tools or more. The most common pair is Nooks with 1mind, at 3 companies.
AmplemarketAmplemarket is used by 59 companies on usedby, 26 confirmed by a case study, a named quote or a press release. Customers include Deel, Vanta, and Stream. Who uses Amplemarket, Amplemarket vs Nooks
Customer page: amplemarket.com. Latest check of 59 of 59 lines: Oct 9, 2026.
Nooks is used by 55 companies on usedby, 0 confirmed by a case study, a named quote or a press release. Customers include HubSpot, Airtable, and ClickUp. Who uses Nooks, Amplemarket vs Nooks
Customer page: nooks.ai. Latest check of 55 of 55 lines: Oct 14, 2026.
QualifiedQualified is used by 38 companies on usedby, 8 confirmed by a case study, a named quote or a press release. Customers include SaaStr, Demandbase, and 8x8. Who uses Qualified, Nooks vs Qualified
Customer page: qualified.com. Latest check of 38 of 38 lines: Oct 8, 2026.
OutreachOutreach is used by 34 companies on usedby, 7 confirmed by a case study, a named quote or a press release. Customers include Siemens, Avis Budget, and Corpay. Who uses Outreach, Amplemarket vs Outreach
Customer page: outreach.ai. Latest check of 32 of 34 lines: Oct 13, 2026.
Companies first listed by a tool of this category in the last 90 days.
Side-by-side pages with the companies behind each tool.
Answers drawn from usedby data.
Amplemarket, used by 59 of the 286 companies on usedby in this category. Then come Nooks (55) and Qualified (38). Who uses Amplemarket.
Amplemarket: 59 companies on usedby, against 55 for Nooks. 3 companies use both, counting every proof level (job posts included).
Yes: 19 of the 286 companies on usedby in this category run two or more. The most common pair is Nooks with 1mind (3 companies).
By the number of companies with a public line for each tool, read from dated captures of vendor customer pages, case studies, press releases and job posts. Every proof level counts in the totals and the ranking, job-post signals included (the weakest proof, shown apart in the proof bar); ties go to the stronger proofs. usedby lists a company when a public page shows it, so these counts describe the companies on usedby, not the whole market.
