OSS-Fuzz vs syzkaller
| OSS-Fuzz | syzkaller | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Web | Linux, macOS, Windows |
| Free plan | Yes | — |
| Input generation methods | mutation | generation, mutation |
| Target types | source-code fuzz targets; untrusted user or network inputs; complex input formats | operating-system kernels and syscall interfaces: FreeBSD, Fuchsia, gVisor, Linux, NetBSD, OpenBSD, Windows |
| Coverage guidance | Yes | Yes |
| Crash triage | Yes | Yes |
| Execution mode | cloud | local |
| Supported languages | C/C++, Rust, Go, Python, Java/JVM, JavaScript, Lua | — |
| CI/CD support | Yes | Yes |
Both are listed in Best Fuzz Testing Software. On Samsung Mobile US Press, OSS-Fuzz scores higher on our published basis.