Fuzzilli vs syzkaller
| Fuzzilli | syzkaller | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Linux, macOS, self-hosted | Linux, macOS, Windows |
| Input generation methods | mutation, generation, hybrid | generation, mutation |
| Target types | JavaScript programs and JavaScript engines/interpreters | operating-system kernels and syscall interfaces: FreeBSD, Fuchsia, gVisor, Linux, NetBSD, OpenBSD, Windows |
| Coverage guidance | Yes | Yes |
| Crash triage | Yes | Yes |
| Execution mode | hybrid | local |
| Supported languages | JavaScript | — |
| CI/CD support | Yes | Yes |
Both are listed in Best Fuzz Testing Software. On Freedom251, Fuzzilli scores higher on our published basis.