# Knowledge & Internal Search: the tools companies use

156 companies on usedby use at least one of the 6 tools in this category with a public customer. Glean leads with 49 companies. Counts are of companies on usedby, not of the whole market. Latest check 2026-10-08: 134 of 161 public lines checked.

> Search engines connected to all internal company data (RAG)

Family: [Operations & Workflow](https://www.usedby.ai/tools/category/operations-workflow.md)

## Ranking

Public customers count every public line, job-post signals included; ties share a rank.

| Rank | Tool | Public customers | Confirmed | Observed | Signals |
|---|---|---|---|---|---|
| 1 | [Glean](https://www.usedby.ai/tools/glean.md) | 49 | 30 | 18 | 1 |
| 2 | [Dust](https://www.usedby.ai/tools/dust.md) | 43 | 37 | 6 | 0 |
| 3 | [Guru](https://www.usedby.ai/tools/guru.md) | 26 | 11 | 15 | 0 |
| 4 | [Loopio](https://www.usedby.ai/tools/loopio.md) | 24 | 18 | 6 | 0 |
| 5 | [Onyx](https://www.usedby.ai/tools/onyx.md) | 14 | 1 | 13 | 0 |
| 6 | [Atolio](https://www.usedby.ai/tools/atolio.md) | 5 | 2 | 3 | 0 |

---
Source: https://www.usedby.ai/tools/category/knowledge-internal-search · How we check: https://www.usedby.ai/methodology