libfuzzer

Coverage-guided fuzzer built into LLVM for finding bugs in C/C++ code with minimal setup. libFuzzer is an in-process, coverage-guided fuzzer that is part of the LLVM project. It's the recommended starting point for fuzzing C/C++ projects due to its simplicity and integration with the LLVM toolchain. While libFuzzer has been in maintenance-only mode since late 2022, it is easier to install and use than its alternatives, has wide support, and will be maintained for the foreseeable future. Choose libFuzzer when: Note: Fuzzing harnesses written for libFuzzer are compatible with AFL++, making it easy to transition if you need more advanced features like better multi-core support. Compile and run: For the latest LLVM version: Install Clang through Visual Studio. Refer to Microsoft's documentation for setup instructions. Recommendation: If possible, fuzz on a local x86_64 VM or rent one on DigitalOcean, AWS, or Hetzner. Linux provides the best support for libFuzzer.