Csmith vs Mayhem
| Csmith | Mayhem | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | Free | $236/mo |
| Open source | No | No |
| Platforms | Linux, Windows | api, Linux, macOS, self-hosted, Web, Windows |
| Free plan | Yes | — |
| Input generation methods | generation | hybrid |
| Target types | C programs; C++ programs; compilers | Linux binaries; Windows PE binaries; TCP/UDP applications; REST APIs; gRPC APIs; containers; automotive vECUs |
| Execution mode | local | hybrid |
| Supported languages | C; C++ | C/C++; Python; Go; Rust; Java |
| CI/CD support | Yes | Yes |
| Coverage guidance | — | Yes |
| Crash triage | — | Yes |
Both are listed in Best Fuzz Testing Software. On Samsung Mobile US Press, Mayhem scores higher on our published basis.