Top 11 JavaScript Worker Projects

greenlet

1 1 4,693 0.0 JavaScript

🦎 Move an async function into its own thread.
Civic Auth

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Auth in Less Than 5 Minutes. Civic Auth comes with multiple SSO options, optional embedded wallets, and user management — all implemented with just a few lines of code. Start building today.
workerize-loader

2 1 2,306 0.0 JavaScript

🏗️ Automatically move a module into a Web Worker (Webpack loader)
vitedge

3 6 733 0.0 JavaScript

Edge-side rendering and fullstack Vite framework
Hamsters.js

4 2 591 8.6 JavaScript

100% Vanilla Javascript Multithreading & Parallel Execution Library

Project mention: Mandelbrot Set Explorer | news.ycombinator.com | 2025-03-15

Check out Hamsters.js[0] for a another convenient parallel processing library.
[0]: https://github.com/austinksmith/Hamsters.js/tree/master
canvas-size

5 1 263 8.5 JavaScript

Determine the maximum area, height, width, and custom dimensions of an HTML canvas element.
sqlite-worker

6 1 194 3.3 JavaScript

A simple, and persistent, SQLite database for Web and Workers.
cable-shared-worker

7 1 61 5.4 JavaScript

ActionCable and AnyCable Shared Worker support
CodeRabbit

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CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
sharedworker

8 1 48 5.4 JavaScript

A small spec. compliant polyfill for SharedWorkers, it acts as a drop in replacement for normal Workers.
nanothreads

9 1 40 3.4 JavaScript

A tiny multi-threading & concurrency library, for Node.js and the browser
cloudflare-worker-router-template

10 1 12 0.0 JavaScript

A wrangler template for a super lightweight router (3.6 kB) with middleware support and ZERO dependencies for CloudFlare Workers, inspired by express.js syntax.
DispatchQueue

11 1 4 0.0 JavaScript

Mach-O/XNU DispatchQueue implementation in Node

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

JavaScript Worker discussion

JavaScript Worker related posts

Cash: A small jQuery alternative for modern browsers

9 projects | news.ycombinator.com | 2 Nov 2024
Are you using generators?

2 projects | /r/learnjavascript | 30 Jun 2023
I've made my app's search fast and open-sourced the solution

4 projects | /r/react | 22 Jun 2022
Converting expensive synchronous functions to asynchronous

1 project | /r/learnjavascript | 13 Aug 2021

Index

What are some of the best open-source Worker projects in JavaScript? This list will help you:

#	Project	Stars
1	greenlet	4,693
2	workerize-loader	2,306
3	vitedge	733
4	Hamsters.js	591
5	canvas-size	263
6	sqlite-worker	194
7	cable-shared-worker	61
8	sharedworker	48
9	nanothreads	40
10	cloudflare-worker-router-template	12
11	DispatchQueue	4