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Best QuickJS Alternatives ranked by AI · updated May 2025

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QuickJS is a small and embeddable JavaScript engine with a focus on performance and a small memory footprint.

Price: Free 🎯 bellard.org/quickjs
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Top 6 QuickJS alternatives

1

V8

V8 is Google's open-source high-performance JavaScript and WebAssembly engine, written in C++.

Pros

  • Optimized for Chrome browser
  • Powerful JIT compiler

Cons

  • Primarily for browser environments
  • Limited standalone runtime functionality

Free and open-source

Alternatives to V8 →
4 Lua logo

Lua

Lua is a powerful, efficient, lightweight, embeddable scripting language. It supports procedural programming, object-oriented programming, functional programming, data-driven programming, and data description.

Free

Alternatives to Lua → Visit site
5 Deno logo

Deno

Deno Land Inc.

Deno is a secure JavaScript, TypeScript, and WebAssembly runtime with built-in tooling for formatting, linting, testing, and dependency management. It suits developers...

Pros

  • TypeScript, testing, formatting, and linting are integrated into the runtime
  • Permission controls provide stronger default isolation than Bun or Node.js
  • Uses web-standard APIs extensively, improving portability across runtimes

Cons

  • npm and Node.js compatibility is generally less complete than Node.js's
  • Smaller package and community ecosystem than Node.js
  • Permission model can require extra configuration for existing scripts

Free; Deno Deploy from $20/mo

Alternatives to Deno → Visit site
6 mruby logo

mruby

mruby contributors

mruby is a lightweight Ruby implementation designed for embedding in C and resource-constrained applications. It provides a compact bytecode virtual machine and...

Pros

  • Much smaller runtime footprint than CRuby
  • Embeds directly into C and C++ applications
  • Uses Ruby syntax and supports a subset of Ruby semantics

Cons

  • Far less compatible with Ruby gems than CRuby
  • Smaller standard library and tooling ecosystem
  • Requires native integration work for many application features

Free, open source

Alternatives to mruby → Visit site

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