Compare the Top Fuzz Testing Tools as of July 2025

What are Fuzz Testing Tools?

Fuzz testing tools are automated software tools used to detect bugs and vulnerabilities in computer systems. They generate large amounts of random input data to test the robustness of a system. These tools are commonly used in software development to enhance the quality and security of a product. Fuzz testing tools can be applied to various types of systems, including web applications, mobile apps, and operating systems. They have become an essential part of the testing process in modern software development due to their ability to uncover hidden flaws that traditional testing methods may miss. Compare and read user reviews of the best Fuzz Testing tools currently available using the table below. This list is updated regularly.

  • 1
    beSTORM

    beSTORM

    Beyond Security (Fortra)

    Discover code weaknesses and certify the security strength of any product without access to source code. Test any protocol or hardware with beSTORM, even those used in IoT, process control, CANbus compatible automotive and aerospace. Realtime fuzzing, doesn’t need access to the source code, no cases to download. One platform, one GUI to learn, with over 250+ prebuilt protocol testing modules and the ability to add custom and proprietary ones. Find the security weaknesses before deployment that are most often discovered by external actors after release. Certify vendor components and your own applications in your own testing center. Self-learning software module and propriety software testing. Customization and scalability for any business sizes up or down. Automatically generate and deliver near-infinite attack vectors and document any product failures. Record every pass/fail and hand engineering the exact command that produced each fail.
    Starting Price: $50,000.00/one-time
  • 2
    Black Duck

    Black Duck

    Black Duck

    Black Duck, part of the Synopsys Software Integrity Group, is a leading provider of application security testing (AST) solutions. Their comprehensive portfolio includes tools for static analysis, software composition analysis (SCA), dynamic analysis, and interactive analysis, enabling organizations to identify and mitigate security vulnerabilities throughout the software development life cycle. By automating the discovery and management of open-source software, Black Duck ensures compliance with security and licensing standards. Their solutions are designed to help organizations build trust in their software by managing application security, quality, and compliance risks at the speed their business demands. Black Duck empowers businesses to innovate securely and deliver software with confidence.
  • 3
    Mayhem

    Mayhem

    ForAllSecure

    Advanced fuzzing solution that combines guided fuzzing with symbolic execution, a patented technology from CMU. Mayhem is an advanced fuzz testing solution that dramatically reduces manual testing efforts with autonomous defect detection and validation. Deliver safe, secure, reliable software with less time, cost, and effort. Mayhem’s unique advantage is in its ability to acquire intelligence of its targets over time. As Mayhem’s knowledge grows, it deepens its analysis and maximizes its code coverage. All reported vulnerabilities are exploitable, confirmed risks. Mayhem guides remediation efforts with in-depth system level information, such as backtraces, memory logs, and register state, expediting issue diagnosis and fixes. Mayhem utilizes target feedback to custom generate test cases on the fly -- meaning no manual test case generation required. Mayhem offers access to all of its test cases to make regression testing effortless and continuous.
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