Top 10 C++ Fuzzing Projects

wtf

1 1,349 5.6 C++

wtf is a distributed, code-coverage guided, customizable, cross-platform snapshot-based fuzzer designed for attacking user and / or kernel-mode targets running on Microsoft Windows and Linux user-mode (experimental!). (by 0vercl0k)
cryptofuzz

6 655 9.0 C++

Fuzzing cryptographic libraries. Magic bug printer go brrrr.
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
fuzzuf

2 352 7.9 C++

Fuzzing Unification Framework
e9afl

3 282 0.0 C++

AFL binary instrumentation
mishegos

6 219 8.2 C++

A differential fuzzer for x86 decoders

Project mention: Differ: Tool for testing and validating transformed programs | news.ycombinator.com | 2024-01-31

Differential fuzzing is woefully underutilized -- our experience is that it consistently[1] finds[2] bugs that "traditional" fuzzing techniques struggle to discover, and that the primary obstacles to its adoption are harness and orchestration complexity. DIFFER goes a long way towards overcoming those obstacles!
(FD: My company.)
[1]: https://github.com/trailofbits/mishegos
[2]: https://x509-limbo.com/

libfuzzer

1 195 4.8 C++

Rust bindings and utilities for LLVM’s libFuzzer (by rust-fuzz)
Sloth

1 117 2.9 C++

Sloth 🦥 is a coverage guided fuzzing framework for fuzzing Android Native libraries that makes use of libFuzzer and QEMU user-mode emulation (by ant4g0nist)
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
fluffi

1 99 0.0 C++

FLUFFI (Fully Localized Utility For Fuzzing Instantaneously) - A distributed evolutionary binary fuzzer for pentesters
crashmon

1 47 2.7 C++

crashmon - A LLDB Based replacement for CrashWrangler
GrayC

1 46 9.4 C++

GrayC: Greybox Fuzzing of Compilers and Analysers for C

Project mention: GrayC: Greybox Fuzzing of Compilers and Analysers for C | news.ycombinator.com | 2023-11-03

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).