Dev tools · alternatives · 2026
24 alternatives to Jazzer.js – Fuzzing for JavaScript is now effective
Coverage-guided, in-process fuzzing for Node.js. Contribute to CodeIntelligenceTesting/jazzer.js development by creating an account on GitHub.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Jazzer.js – Fuzzing for JavaScript is now effective launched in 2022; newer entries below may have overtaken it.
- 1
Hi HN! Thanks for your attention to my post. It was a big challenge to run most of Node.js packages in browser, fast moreover. Virtual File system, resolve import/export. I got cold many times, depressions, burned out, yet still alive and finished it. Many guys helped me with an advice. Many users give a lot of positive feedback. There are 200,000 monthly unique users. I work full time now because of the freemium business model. To be honest - I am happy after many years of hard work.
2022 · playcode.io · its alternatives →
- 2
Colin here, creator of Nub. I’ve had the general shape of this in mind for years. Nub runs your code with stock `node`, augmented with a `--require` preload hook[0] that adds a transpiler (oxc-powered, packaged as a Node-API add-on), registers a module resolution hook[1], and injects polyfills as needed for APIs like `Worker`, `Temporal`, etc. All purely additive, your code ultimately runs using Node’s actual engine & stdlib implementations. [0] https://nodejs.org/api/cli.html#-require-module [1]…
Jun 2026 · github.com · its alternatives →
- 3
Sandworm▲293Keep your JavaScript code secure and compliant with Sandworm
2023 · sandworm.dev · its alternatives →
- 4
Black-box fuzzer that fuzzes APIs based on OpenAPI specification. Find bugs for free! - matusf/openapi-fuzzer
2021 · github.com · its alternatives →
- 5
An Innovative, Fast Transpiler for ECMAScript 2015 and later - JazzleWare/jazzle
2017 · github.com · its alternatives →
- 6NJ
Hey HN, I'm Sindre, CTO of Scrimba (YC S20). We originally launched Scrimba to make video learning more interactive for aspiring frontend developers. So instead of passively watching videos, you can jump in an experiment with the code directly inside the video player. Since launch, almost two million people have used Scrimba to grow their skills. However, one limitation is that we've only supported frontend code, as our interactive videos run in the browser, whereas most of our learners want to go fullstack—building APIs, handling auth, working with databases, and so forth. To fix this, we…
2025 · its alternatives →
- 7
Render multiple moving rectangles to compare a number of canvas engines.
2020 · benchmarks.slaylines.io · its alternatives →
- 8
I wrote this tool during an internship at Narf Industries in 2023. It's a REPL that allows for quickly developing, testing, and fuzzing for HTTP request smuggling attack payloads. I started the internship having never worked with web servers, and have now found over 100 HTTP implementation bugs. I attribute this mostly to the ease of experimentation in the Garden. REPL-oriented fuzzing is just a really good interface for finding parsing bugs. It's pretty neat to able to run a differential fuzzer, categorize and display all the discovered discrepancies, then let a human pick through them and…
2024 · github.com · its alternatives →
- 9
ZappJS▲184code generator for Node.js, Ruby, Swift, Java, PHP & more
2018 · zappjs.com · its alternatives →
- 10
I recently dipped my toes into bug bounty hunting and finding security flaws in web applications. As a friend of UNIX shells I was building a repertoire of command line tools to make and analyze HTTP requests. Fortunately there are already many suitable tools like curl, jq, different fuzzers and some really nice tools for specific tasks by Tom Hudson [1]. However, I disliked that the existing fuzzers were monoliths where I had no easy way of creating custom behavior or analyses. They commonly do a multitude of things: Create multiple requests using one or more wordlist, sending the request,…
2024 · github.com · its alternatives →
- 11
- 12PM
2012 · proxino.com · its alternatives →
- 13
- 14
Find the origin of any character in the DOM
2019 · fromjs.com · its alternatives →
- 15
A chrome extension tracks front-end JavaScript that uses DOM / jQuery APIs to manipulate html dom elements (e.g., change style, attach event listener) at runtime. - pilagod/js-tracker
2018 · github.com · its alternatives →
- 16
My little fuzzing framework inspired by grinder. Contribute to susperius/PyFuzz2 development by creating an account on GitHub.
2015 · github.com · its alternatives →
- 17
Keep your JavaScript code secure and compliant with Sandworm - Sandworm
2022 · github.com · its alternatives →
- 18
:microscope: A JavaScript interpretation of the Ruby library Scientist, a library for carefully refactoring critical paths. - bugthesystem/scientist.js
2016 · github.com · its alternatives →
- 19LM
2013 · niftylettuce.com · its alternatives →
- 20
Amplication brings order to the chaos of large-scale software development by creating Golden Paths for developers - streamlined workflows that drive consistency, enable high-quality code practices, simplify onboarding, and accelerate standardized delivery across teams. - amplication/amplication
2022 · github.com · its alternatives →
- 21
301 Moved to http://github.com/daraosn/mustekala. Contribute to daraosn/node-puller development by creating an account on GitHub.
2012 · github.com · its alternatives →
- 22
2025 · github.com · its alternatives →
- 23
A Hacker News Reader in Vanilla JavaScript. Contribute to k2052/vanilla-hn development by creating an account on GitHub.
2017 · github.com · its alternatives →
- 24
A Node.js package for invoking divine blessings for one's Javascript code. - rudimk/dua.js
2017 · github.com · its alternatives →
Also compare
- I've been making JavaScript sandbox alone for 6 years alternatives
- Nub – A Bun-like all-in-one toolkit for Node.js alternatives
- Sandworm alternatives
- OpenAPI fuzzer – fuzzing APIs based on OpenAPI specification alternatives
- Jazzle – An Innovative, Fast Transpiler for ECMAScript 2015 and later alternatives
- Node.js video tutorials where you can edit and run the code alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →