parallel-js/parallel.js

Health v2 · maintenance only

Adoption not part of the score

3246 stars · 197 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Parallel.js is a JavaScript library that simplifies parallel computing by running functions on worker threads in the browser (via Web Workers) and child processes in Node.js. It provides a chainable API for spawning parallel jobs over serializable data.

Use cases

• run cpu-heavy javascript off the main thread
• parallelize map operations over an array in node
• use web workers without writing worker boilerplate
• distribute computation across multiple cores
• process large datasets concurrently in the browser

When to choose

• you need simple multi-core processing in Node or the browser with a minimal chained API
• your data is JSON-serializable and tasks are independent function calls

When to avoid

• you need fine-grained control over worker pools, shared memory, or transferable objects
• your functions rely on closures or non-serializable state, since data must be JSON-serializable
• you need a modern, actively developed concurrency solution

Facets

library · maturity maintenance

concurrency serialization developer-tools web-development backend browser cross-platform parallel-computing web-workers child-processes multi-core chained-api nodejs javascript

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