# Microsoft Copilot vs Writer: who uses which

On usedby, 3 companies use Microsoft Copilot and 67 use Writer. 1 company uses both, including 6sense. 1 of them is known through a job post (the weakest proof) on at least one side. Counts include every proof level, job-post signals included; each company keeps its proof level on each side. Latest check 2026-10-13: 67 of 70 public lines checked.

## Side by side

|  | [Microsoft Copilot](https://www.usedby.ai/tools/microsoft-copilot.md) | [Writer](https://www.usedby.ai/tools/writer.md) |
|---|---|---|
| Public customers | 3 | 67 |
| Confirmed | 0 | 0 |
| Observed | 0 | 67 |
| Signals (job posts) | 3 | 0 |
| Top industries of customers (every proof level) | Agency & Studio (1), Data & Analytics (1), Marketing Tech (1) | HealthTech & Digital Health (7), Marketing Tech (6), Fintech & Payments (5) |
| Category | Enterprise AI Platforms | Enterprise AI Platforms |
| Security | — | SOC 2 Type II, ISO 27001 ([writer.com](https://writer.com/trust/), checked 2026-10-03) |
| Your data | — | Not used to train models by default. ([writer.com](https://writer.com/trust/), checked 2026-10-03) |
| Data processing terms | — | A data processing agreement is available. ([writer.com](https://writer.com/legal/data-processing/), checked 2026-10-03) |
| Free trial | — | Free trial or free plan available. ([writer.com](https://writer.com/plans/), checked 2026-10-03) |
| Integrations | — | Snowflake, Salesforce, Contentful, Adobe Experience Manager, Asana, Atlassian, Databricks, FactSet, Gong, Google BigQuery, Google Workspace, HubSpot ([writer.com](https://writer.com/product/connectors/), checked 2026-10-03) |

## Companies that use both

Every proof level counts; the proof level of each side is shown, strongest proofs first. The first public proof is not an adoption date.

| Company | Proof, Microsoft Copilot | Proof, Writer | First public proof, Microsoft Copilot | First public proof, Writer |
|---|---|---|---|---|
| [6sense](https://www.usedby.ai/companies/6sense.md) | Signal (job post) | Observed | Job post, June 2026 | On or before May 2023 |

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Source: https://www.usedby.ai/compare/microsoft-copilot-vs-writer · How we check: https://www.usedby.ai/methodology