# Unit21 alternatives

4 of the 40 Unit21 customers on usedby also use another tool on this list. The tools most often used by the same companies are Sardine (3 shared, 32 customers in all), Feedzai (1 shared, 21 customers in all) and Bretton AI (formerly Greenlite) (1 shared, 14 customers in all). Customer counts include every proof level, job-post signals included. Shared customers are counted on confirmed or observed lines on both tools. Latest check 2026-10-08: 143 of 143 public lines checked.

Tool page: https://www.usedby.ai/tools/unit21.md

## Alternatives

Tools of the same or a competing category ([Fraud & AML](https://www.usedby.ai/tools/category/fraud-aml.md)), from another vendor, with at least one company named on both tools. Most shared customers first.

| Rank | Tool | Named customers shared with Unit21 | Public customers | Most common industry | Compare |
|---|---|---|---|---|---|
| 1 | [Sardine](https://www.usedby.ai/tools/sardine.md) | 3 | 32 | Fintech & Payments (6) | https://www.usedby.ai/compare/sardine-vs-unit21.md |
| 2 | [Feedzai](https://www.usedby.ai/tools/feedzai.md) | 1 | 21 | — | https://www.usedby.ai/compare/feedzai-vs-unit21.md |
| 3 | [Bretton AI (formerly Greenlite)](https://www.usedby.ai/tools/bretton-ai.md) | 1 | 14 | — | https://www.usedby.ai/compare/bretton-ai-vs-unit21.md |

## Other tools of this category

Same category, with public customers, but no company named with Unit21 yet.

- [ComplyAdvantage](https://www.usedby.ai/tools/complyadvantage.md): 19 customers
- [Quantexa](https://www.usedby.ai/tools/quantexa.md): 11 customers
- [Hawk](https://www.usedby.ai/tools/hawk.md): 6 customers

Switches between tools are not published: naming a switch would name a departure, and usedby hides lines a vendor stops showing.

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Source: https://www.usedby.ai/alternatives/unit21 · How we check: https://www.usedby.ai/methodology