Best ClusterFuzz Alternatives in 2026
Updated
20 tools from fuzz testing software ranked against ClusterFuzz on the same published basis.
- 1ClusterFuzz vs Mayhem
- 3ClusterFuzz vs AFL++
- 4ClusterFuzz vs cargo-fuzz
- 5ClusterFuzz vs Accessibility Test Framework for Android
- 6ClusterFuzz vs Jazzer
- 7ClusterFuzz vs boofuzz
- 8ClusterFuzz vs Fuzzilli
- 9ClusterFuzz vs Schemathesis
- 10ClusterFuzz vs Csmith
- 11ClusterFuzz vs OSS-Fuzz
- 12ClusterFuzz vs Roslynator
- 13ClusterFuzz vs Black Duck Coverity
- 14ClusterFuzz vs FuzzForge
- 15ClusterFuzz vs Honggfuzz
- 16ClusterFuzz vs syzkaller
- 17ClusterFuzz vs Onyx Launcher
- 18ClusterFuzz vs Fortra ZTNA
- 19ClusterFuzz vs Scout Suite
- 20ClusterFuzz vs Netzob
- 21ClusterFuzz vs Wfuzz
ClusterFuzz alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Mayhem | 7.8 | Free plan | $236/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 3 | AFL++ | 7.5 | Free plan | €1666.67/mo | Android, Linux, Mac, self-hosted, Windows |
| 4 | cargo-fuzz | 7.5 | Free plan | Free | Linux, Mac, Windows |
| 5 | Accessibility Test Framework for Android | 7.3 | Free plan | Free | Android, Linux, Mac, Windows |
| 6 | Jazzer | 7.2 | Free plan | Free | Linux, Mac, Windows |
| 7 | boofuzz | 7.1 | Free plan | Free | API, Linux, self-hosted, Windows |
| 8 | Fuzzilli | 7.1 | Free plan | Free | Linux, Mac, self-hosted |
| 9 | Schemathesis | 7.1 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 10 | Csmith | 6.9 | Free plan | Free | Linux, Windows |
| 11 | OSS-Fuzz | 6.9 | Free plan | Free | Web |
| 12 | Roslynator | 6.9 | Free plan | Free | Browser, Linux, Mac, Windows |
| 13 | Black Duck Coverity | 6.8 | No | — | Linux, Mac, self-hosted, Web, Windows |
| 14 | FuzzForge | 6.4 | No | — | self-hosted, Web |
| 15 | Honggfuzz | 6.4 | No | — | Android, Linux, Mac, Windows |
| 16 | syzkaller | 6.2 | No | — | Linux, Mac, Windows |
| 17 | Onyx Launcher | 6.1 | No | — | Windows, Linux |
| 18 | Fortra ZTNA | 6.0 | No | — | Web |
| 19 | Scout Suite | 6.0 | No | — | Mac, Linux |
| 20 | Netzob | 5.9 | No | — | Linux, Windows |
| 21 | Wfuzz | 5.9 | No | — | Windows, Mac |
Make your tool an alternative to ClusterFuzz
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about ClusterFuzz alternatives
What is the best alternative to ClusterFuzz?
Mayhem, number 1 in fuzz testing software with a score of 7.8 out of 10. The others here: AFL++, cargo-fuzz, Accessibility Test Framework for Android and 16 more.
What is the best free alternative to ClusterFuzz?
Mayhem is the best-ranked alternative with a free plan. 11 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.