Best Jazzer Alternatives in 2026
Updated
20 apps from fuzz testing software ranked against Jazzer on the same published basis.
- 1Jazzer vs AFL++
- 2Jazzer vs Mayhem
- 3Jazzer vs OSS-Fuzz
- 4Jazzer vs ClusterFuzz
- 5Jazzer vs Honggfuzz
- 7Jazzer vs Fuzzilli
- 8Jazzer vs Schemathesis
- 9Jazzer vs FuzzForge
- 10Jazzer vs EvoMaster
- 11Jazzer vs cargo-fuzz
- 12Jazzer vs EvoMaster
- 13Jazzer vs syzkaller
- 14Jazzer vs Metalware
- 15Jazzer vs Csmith
- 16Jazzer vs boofuzz
- 17Jazzer vs Fuzzware
- 18Jazzer vs Netzob
- 19Jazzer vs RESTler
- 20Jazzer vs Fuzzinator
- 21Jazzer vs Wfuzz
Jazzer alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | AFL++ | 9.4 | Free plan | €1666.67/mo | Android, Linux, Mac, self-hosted, Windows |
| 2 | Mayhem | 8.2 | Free plan | $236/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 3 | OSS-Fuzz | 8.1 | Free plan | Free | Web |
| 4 | ClusterFuzz | 8.1 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 5 | Honggfuzz | 7.7 | No | — | Android, Linux, Mac, Windows |
| 7 | Fuzzilli | 7.1 | Free plan | Free | Linux, Mac, self-hosted |
| 8 | Schemathesis | 6.8 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 9 | FuzzForge | 6.6 | No | — | Web |
| 10 | EvoMaster | 6.5 | No | — | Windows, Mac, Linux |
| 11 | cargo-fuzz | 6.5 | Free plan | Free | Linux, Mac, Windows |
| 12 | EvoMaster | 6.4 | No | — | Windows, Mac, Linux |
| 13 | syzkaller | 6.3 | No | — | Linux, Mac, Windows |
| 14 | Metalware | 6.2 | No | — | Web |
| 15 | Csmith | 6.2 | Free plan | Free | Linux, Windows |
| 16 | boofuzz | 5.8 | Free plan | Free | API, Linux, self-hosted, Windows |
| 17 | Fuzzware | 5.7 | No | — | Linux |
| 18 | Netzob | 5.5 | No | — | Linux, Windows |
| 19 | RESTler | 5.4 | No | — | Linux, Mac, Windows |
| 20 | Fuzzinator | 5.1 | No | — | Linux, Mac |
| 21 | Wfuzz | 5.0 | No | — | Windows, Mac |
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Questions about Jazzer alternatives
What is the best alternative to Jazzer?
AFL++, number 1 in fuzz testing software with a score of 9.4 out of 10. The others here: Mayhem, OSS-Fuzz, ClusterFuzz and 16 more.
What is the best free alternative to Jazzer?
AFL++ is the best-ranked alternative with a free plan. 9 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.