Csmith vs OSS-Fuzz

Csmith

5.9 #8 in Fuzz Testing Software

About Csmith

OSS-Fuzz

5.9 #10 in Fuzz Testing Software

About OSS-Fuzz
CsmithOSS-Fuzz
Free planYesYes
Free trialNoNo
Paid fromFreeFree
Open sourceNoNo
PlatformsLinux, WindowsWeb
Free planYesYes
Input generation methodsgenerationmutation
Target typesC programs; C++ programs; compilerssource-code fuzz targets; untrusted user or network inputs; complex input formats
Execution modelocalcloud
Supported languagesC; C++C/C++, Rust, Go, Python, Java/JVM, JavaScript, Lua
CI/CD supportYesYes
Coverage guidance—Yes
Crash triage—Yes

Both are listed in Best Fuzz Testing Software. On Inferse, Csmith scores higher on our published basis.