Best Fuzz Testing Tools for JSON

x
View:
Open Source Commercial

Compare the Top Fuzz Testing Tools that integrate with JSON as of October 2025

Sort By:
JSON Fuzz Testing Clear Filters

This a list of Fuzz Testing tools that integrate with JSON. Use the filters on the left to add additional filters for products that have integrations with JSON. View the products that work with JSON in the table below.

What are Fuzz Testing Tools for JSON?

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 for JSON currently available using the table below. This list is updated regularly.

  • 1
    PortSwigger Burp Suite Professional
    Hands-on security testers need the best tools for the job. Tools you have faith in, and enjoy using all day long. The tools that other professionals trust. Burp Suite Professional is the web security tester's toolkit of choice. Use it to automate repetitive testing tasks, then dig deeper with its expert-designed manual and semi-automated security testing tools. Burp Suite Professional can help you to test for OWASP top 10 vulnerabilities, as well as the very latest hacking techniques. Smart automation works in concert with expert-designed manual tools, to save you time. Optimize your workflow, and do more of what you do best. Burp Scanner can navigate and scan JavaScript-heavy single-page applications (SPAs), scan APIs, and enable the prerecording of complex authentication sequences. A toolkit designed and used by professional testers. Utilize features like the ability to record everything you did on an engagement and a powerful search function to improve efficiency and reliability.
    Starting Price: $449 per year
    View Tool
  • 2
    Etheno

    Etheno

    Crytic

    Etheno is an Ethereum-testing, JSON RPC multiplexer, analysis tool wrapper, and test integration tool. It eliminates the complexity of setting up analysis tools like Echidna on large, multi-contract projects. If you are a smart contract developer, you should use Etheno to test your contracts. If you are an Ethereum client developer, you should use Etheno to perform differential testing on your implementation. Etheno runs a JSON RPC server that can multiplex calls to one or more clients. API for filtering and modifying JSON RPC calls. Enables differential testing by sending JSON RPC sequences to multiple Ethereum clients. Deploy to and interact with multiple networks at the same time. Integration with test frameworks like Ganache and Truffle. Run a local test network with a single command. Use our prebuilt Docker container to quickly install and try Etheno. Etheno can be used in many different ways and therefore, has numerous command-line argument combinations.
    Starting Price: Free
    View Tool
  • 3
    Ffuf

    Ffuf

    Ffuf

    Ffuf is a fast web fuzzer written in Go. You can also practice your Ffuf scans against a live host with different lessons and use cases either locally by using the Docker container or against the live-hosted version. Provides virtual host discovery (without DNS records). In order to tell Ffuf about different inputs to test out, a wordlist is needed. You can supply one or more wordlists on the command line, and in case you wish (or are using multiple wordlists) you can choose a custom keyword for them. You can supply Ffuf with multiple wordlists (remember to configure a custom keyword for them though). The first word of the first wordlist is tested against all the words from the second wordlist before moving along to test the second word in the first wordlist against all the words in the second wordlist. In short, all of the different combinations are tried out. There are quite a few different ways to customize the request.
    Starting Price: Free
    View Tool
  • 4
    APIFuzzer
    APIFuzzer reads your API description and step-by-step fuzzes the fields to validate if your application can cope with the fuzzed parameters, and it does not require coding. Parse API definition from a local file or remote URL. JSON and YAML file format support. All HTTP methods are supported. Fuzzing of the request body, query string, path parameter, and request header is supported. Relies on random mutations and supports CI integration. Generate JUnit XML test report format. Send a request to an alternative URL. Support HTTP basic auth from the configuration. Save the report of the failed test in JSON format into the pre-configured folder.
    Starting Price: Free
    View Tool
  • 5
    Wapiti

    Wapiti

    Wapiti

    Wapiti is a web application vulnerability scanner. Wapiti allows you to audit the security of your websites or web applications. It performs "black-box" scans (it does not study the source code) of the web application by crawling the webpages of the deployed web app, looking for scripts and forms where it can inject data. Once it gets the list of URLs, forms, and their inputs, Wapiti acts like a fuzzer, injecting payloads to see if a script is vulnerable. Search for potentially dangerous files on the server. Wapiti supports both GET and POST HTTP methods for attacks. It also supports multipart forms and can inject payloads in filenames (upload). Warnings are raised when an anomaly is found (for example 500 errors and timeouts). Wapiti is able to make the difference between permanent and reflected XSS vulnerabilities. Generates vulnerability reports in various formats (HTML, XML, JSON, TXT, CSV).
    Starting Price: Free
    View Tool
  • 6
    Echidna

    Echidna

    Crytic

    Echidna is a Haskell program designed for fuzzing/property-based testing of Ethereum smart contracts. It uses sophisticated grammar-based fuzzing campaigns based on a contract ABI to falsify user-defined predicates or Solidity assertions. We designed Echidna with modularity in mind, so it can be easily extended to include new mutations or test specific contracts in specific cases. Generates inputs tailored to your actual code. Optional corpus collection, mutation and coverage guidance to find deeper bugs. Powered by Slither to extract useful information before the fuzzing campaign. Source code integration to identify which lines are covered after the fuzzing campaign. Interactive terminal UI, text-only or JSON output. Automatic test case minimization for quick triage. Seamless integration into the development workflow. Maximum gas usage reporting of the fuzzing campaign. Support for a complex contract initialization with Etheno and Truffle.
    Starting Price: Free
    View Tool
  • Previous
  • You're on page 1
  • Next

Related Categories