Google OSS-Fuzz vs. LibFuzzer Comparison


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About OSS-Fuzz offers continuous fuzzing for open source software. Fuzz testing is a well-known technique for uncovering programming errors in software. Many of these detectable errors, like buffer overflow, can have serious security implications. Google has found thousands of security vulnerabilities and stability bugs by deploying guided in-process fuzzing of Chrome components, and we now want to share that service with the open source community. OSS-Fuzz aims to make common open source software more secure and stable by combining modern fuzzing techniques with scalable, distributed execution. Projects that do not qualify for OSS-Fuzz can run their own instances of ClusterFuzz or ClusterFuzzLite. Currently, OSS-Fuzz supports C/C++, Rust, Go, Python, and Java/JVM code. Other languages supported by LLVM may work too. OSS-Fuzz supports fuzzing x86_64 and i386 builds.	About LibFuzzer is an in-process, coverage-guided, evolutionary fuzzing engine. LibFuzzer is linked with the library under test, and feeds fuzzed inputs to the library via a specific fuzzing entry point (or target function); the fuzzer then tracks which areas of the code are reached, and generates mutations on the corpus of input data in order to maximize the code coverage. The code coverage information for libFuzzer is provided by LLVM’s SanitizerCoverage instrumentation. LibFuzzer is still fully supported in that important bugs will get fixed. The first step in using libFuzzer on a library is to implement a fuzz target, a function that accepts an array of bytes and does something interesting with these bytes using the API under test. Note that this fuzz target does not depend on libFuzzer in any way so it is possible and even desirable to use it with other fuzzing engines like AFL and/or Radamsa.
Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Supported Mac Not Supported Linux Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Professional users looking for a solution to uncover programming errors in their software	Audience Users requiring a fuzzing engine to analyze their code and applications
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Not Supported	API Offers API Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing Free Free Version Supported Free Trial Not Supported	Pricing Free Free Version Supported Free Trial Not Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software

Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Google United States github.com/google/oss-fuzz	Company Information LLVM Project Founded: 2003 llvm.org/docs/LibFuzzer.html
Alternatives Google ClusterFuzz Google	Alternatives afl-unicorn Battelle
ClusterFuzz Google	Atheris Google
Awesome Fuzzing secfigo	Jazzer Code Intelligence
LibFuzzer LLVM Project	Honggfuzz Google
go-fuzz dvyukov View All	american fuzzy lop Google View All
Categories Fuzz Testing Supported	Categories Fuzz Testing Supported

Integrations Atheris Supported C Supported C++ Supported ClusterFuzz Supported Fuzzbuzz Not Supported GitHub Supported Go Supported Google Cloud Storage Supported Google ClusterFuzz Not Supported Java Supported Jazzer Not Supported Python Supported Rust Supported Show More Integrations View All 10 Integrations	Integrations Atheris Supported C Supported C++ Supported ClusterFuzz Supported Fuzzbuzz Supported GitHub Not Supported Go Not Supported Google Cloud Storage Not Supported Google ClusterFuzz Supported Java Not Supported Jazzer Supported Python Not Supported Rust Not Supported Show More Integrations View All 7 Integrations
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