LibFuzzer vs. grcov Comparison


LibFuzzer LLVM Project	grcov	+	+
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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.	About grcov collects and aggregates code coverage information for multiple source files. grcov processes .profraw and .gcda files which can be generated from llvm/clang or gcc. grcov also processes lcov files (for JS coverage) and JaCoCo files (for Java coverage). Linux, macOS and Windows are 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	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
Audience Users requiring a fuzzing engine to analyze their code and applications	Audience Anyone in need of an advanced Code Coverage solution
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 Supported	API Offers API Not 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 LLVM Project Founded: 2003 llvm.org/docs/LibFuzzer.html	Company Information grcov github.com/mozilla/grcov
Alternatives afl-unicorn Battelle	Alternatives Tarpaulin
Atheris Google	blanket.js Blanket.js
Jazzer Code Intelligence	OpenCppCoverage
Honggfuzz Google	OpenClover
american fuzzy lop Google View All	Atheris Google View All
Categories Fuzz Testing Supported	Categories Code Coverage Supported

Integrations C Supported C++ Supported Atheris Supported ClusterFuzz Supported Codecov Not Supported Coveralls Not Supported Fuzzbuzz Supported GitHub Not Supported GitLab Not Supported Google ClusterFuzz Supported HTML Not Supported JSON Not Supported JaCoCo Not Supported Jazzer Supported Mozilla Firefox Not Supported Netlify Not Supported Rust Not Supported Travis CI Not Supported XML Notepad Not Supported Show More Integrations View All 7 Integrations	Integrations C Supported C++ Supported Atheris Not Supported ClusterFuzz Not Supported Codecov Supported Coveralls Supported Fuzzbuzz Not Supported GitHub Supported GitLab Supported Google ClusterFuzz Not Supported HTML Supported JSON Supported JaCoCo Supported Jazzer Not Supported Mozilla Firefox Supported Netlify Supported Rust Supported Travis CI Supported XML Notepad Supported Show More Integrations View All 14 Integrations
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