Dev tools · alternatives · 2026
24 alternatives to Sandbox.js - Run user code in a sandboxed environment
Sandbox.js is a developer tool that executes user-submitted code in an isolated environment. Launched in 2012, it prevents untrusted code from accessing the host system or causing unintended side effects. The tool is… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Sandbox.js - Run user code in a sandboxed environment launched in 2012; newer entries below may have overtaken it.
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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 →
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This TypeScript package allows you to safely execute JavaScript code within a WebAssembly sandbox using the QuickJS engine. Perfect for isolating and running untrusted code securely, it leverages the lightweight and fast QuickJS engine compiled to WebAssembly, providing a robust environment for code execution. Features - *Security*: Run untrusted JavaScript code in a safe, isolated environment. - *File System*: Can mount a virtual file system - *Custom Node Modules*: Custom node modules are mountable - *Fetch Client*: Can provide a fetch client to make http(s) calls - *Test-Runner*: Includes…
2024 · github.com · its alternatives →
- 3RU
I needed a way to let users write JavaScript to create plugins for a site I'm building. I couldn't find a solution I was happy with, so ended up building one that run's it in a web worker on a separate domain from your main site. Hopefully I haven't missed anything. If so, please let me know! My website has an interactive demo you can write code in the browser textarea, and see the output on the right. Interactive Demo: https://workerbox.net/ Github: https://github.com/markwylde/workerbox
2022 · workerbox.net · its alternatives →
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Keep your JavaScript code secure and compliant with Sandworm
2023 · sandworm.dev · its alternatives →
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Toolkit for building live coding experiences in browser
2021 · sandpack.codesandbox.io · its alternatives →
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Sandworm▲304Keep your JavaScript code secure and compliant with Sandworm
2023 · sandworm.dev · its alternatives →
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A tiny "sandbox" to run untrusted code 🏖️. Contribute to craigmulligan/sandy development by creating an account on GitHub.
2020 · github.com · its alternatives →
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Keep your JavaScript code secure and compliant with Sandworm - Sandworm
2022 · github.com · its alternatives →
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YepCode▲157Hey HN, We’re excited to introduce YepCode Run, a serverless runtime and SDK for executing code in secure sandboxes. Built on top of YepCode (https://yepcode.io), it allows you to execute code without any setup or installation. Perfect for: * Running AI-generated code – Securely in a sandbox environment, enabling fully autonomous AI agents. * Package Exploration – Try npm or PyPI packages without installing them locally. * Code Sharing – Easily share runnable code examples with others. * Quick Prototyping – Test snippets and algorithms on the fly. Just write or paste your code, and…
2022 · yepcode.io · its alternatives →
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I'm excited to introduce Zerobox, a cross-platform, single binary process sandboxing CLI written in Rust. It uses the sandboxing crates from the OpenAI Codex repo and adds additional functionalities like secret injection, SDK, etc. Watch the demo: https://www.youtube.com/watch?v=wZiPm9BOPCg Zerobox follows the same sandboxing policy as Deno which is deny by default. The only operation that the command can run is reading files, all writes and network I/O are blocked by default. No VMs, no Docker, no remote servers. Want to block reads to /etc? zerobox…
Mar 2026 · github.com · its alternatives →
- 11CC
Chunk co-founder here. We spent the last 2 weeks building this to scratch our own itch: As developers, we often have problems that could be solved just by running a few lines of code. Sometimes, running this code on your local machine is fine. But other time, the code need to run automatically reacting to external events or to run continuously, which means, it needs to run on a server somewhere. So now, you have to find a cloud provider, to package or build the code and finally to deploy it. All of that for what could be literally be 4 lines of code. We couldn’t find an easier way to do…
2022 · chunk.run · its alternatives →
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A self-hostable Wasm sandbox for JavaScript workers.
Jun 2026 · kyushu.dev · its alternatives →
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Hello HN! I'm the creator and solo developer of Extension.js, a development tool for browser extensions with built-in support for TypeScript, WebAssembly, React, and modern JavaScript. Developers use it to spend less time configuring the compilation config or learning new frameworks and more time actually writing code. Most projects similar to Extension.js rely on some sort of abstraction or configuration to get started, making the initial development process slow given the extra learning curve and setup guidelines. By using Extension.js, adding the package to your npm scripts is all it…
2024 · github.com · its alternatives →
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A GitHub Action that runs a command in a gVisor sandbox - geomys/sandboxed-step
Oct 2025 · github.com · its alternatives →
- 15AS
I was inspired to make a web based ants simulator after watching this video https://www.youtube.com/watch?v=81GQNPJip2Y Any feedback appreciated. Best viewed on Chromium based browsers. Firefox is slow for some reason and Safari is not tested as I don't have a Mac.
2022 · ants-sandbox.io · its alternatives →
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Write & test Swift code in your browser
2015 · swiftlang.ng.bluemix.net · its alternatives →
- 17IW
2011 · hildr.luminance.org · its alternatives →
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Bun▲303A fast JS runtime Node.js replacement with built‑in tools
Dec 2025 · bun.com · its alternatives →
- 20CJ
2013 · filepicker.github.io · its alternatives →
- 21CJ
2016 · cdmedia.github.io · its alternatives →
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Drop: a rootless Linux sandbox for developers. It isolates coding agents and third-party packages while preserving your work environment.
29d ago · droprun.sh · its alternatives →
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Hi everyone, I built a runtime to isolate untrusted code using wasm sandboxes. Basically, it protects your host system from problems that untrusted code can cause. We’ve had a great discussion about sandboxing in Python lately that elaborates a bit more on the problem [1]. In TypeScript, wasm integration is even more natural thanks to the close proximity between both ecosystems. The core is built in Rust. On top of that, I use WASI 0.2 via wasmtime and the component model, along with custom SDKs that keep things as idiomatic as possible. For example, in Python we have a simple decorator:…
Feb 2026 · github.com · its alternatives →
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