libFuzzer

In-process coverage-guided fuzzing engine from LLVM

About libFuzzer

A library for in-process, coverage-guided fuzz testing integrated with LLVM sanitizers, used to find memory bugs in C and C++ libraries by feeding mutated inputs to a target function. Because the code is openly available, it can be audited, extended and run on private infrastructure, which makes it attractive to teams with privacy or compliance needs. It is commonly adopted through containers or packages, evaluated against commercial alternatives and kept because it solves a focused problem reliably at scale.

libFuzzer key facts

Category: Developer Tools
Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas: fuzzing, llvm, security, cpp
Official site: llvm.org

About the Developer Tools category

Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 738 tools. Alongside libFuzzer, it includes OSS-Fuzz, EvoMaster, TestCafe, Robot Framework.

FreeDeveloper Toolsfuzzingllvmsecuritycpp

More in Developer Tools

Comparing tools in the Developer Tools category? These related listings are worth a look: OSS-Fuzz — Continuous fuzzing service for important open source projects; EvoMaster — AI-driven system test generation for REST, GraphQL and RPC; TestCafe — Node.js tool to automate end-to-end web testing.