npm89Excellenthealth index

gildas-lormeau/zip.jsJavaScript library to zip and unzip files supporting parallel compression, web streams, pluggable compression engines, zip64, split files, data encryption, and deflate64 decompression.
JavaScript★ 3,900↓ 25.3M/moOct 20, 2026
npm88Excellenthealth index

librespeed/speedtestSelf-hosted Speed Test for HTML5 and more. Easy setup, examples, configurable, mobile friendly. Supports PHP, Node, Multiple servers, and more
JavaScript · PHP · HTML★ 15.2KSep 18, 2026
npm · crates.io84Excellenthealth index

andymai/occt-wasmOpenCascade (OCCT) compiled to WebAssembly — clean TypeScript API, ~4MB brotli, arena-based memory, structured errors, Web Worker support
Rust · TypeScript · C++★ 51↓ 20.1K/moSep 14, 2026
npm83Excellenthealth index

chaxus/ranranui — a Web Components UI library — plus ranuts utilities. Hand-built frontend infrastructure.
TypeScript · JavaScript★ 272↓ 5,292/moSep 13, 2026

ChestnutLabs/gcode-previewWorker-based, cross-vendor G-code toolpath parser + Three.js preview for the browser: a versioned IR with Vue, React, Svelte, and Web-Component adapters. MIT fork of remcoder/gcode-preview.
G-code · TypeScript★ 2↓ 14.2K/moOct 10, 2026

moeru-ai/eventa🫵👂 Events are all you need. Truly type-safe event driven toolbox, define it everywhere, use it anywhere, best for Web Worker/WebSocket/Electron IPC/RPC
TypeScript★ 43↓ 46.5K/moSep 14, 2026
JavaScript★ 2,309↓ 52.6M/moSep 17, 2026

Aaronius/penpalPenpal simplifies communication with iframes, workers, and windows by using promise-based methods on top of postMessage.
TypeScript★ 562↓ 1.6M/moSep 15, 2026
TypeScript★ 0↓ 24.6K/moSep 9, 2026

flyfish-dev/cad-viewerProduction-oriented browser CAD viewer for DWG, DXF, DWF, DWFx and XPS with LibreDWG WASM, WebGL/Canvas rendering, external SHX references and native DWF support.
TypeScript · JavaScript★ 14↓ 27.2K/moSep 9, 2026
npm · crates.io71Goodhealth index

kunkunsh/kkrpcA TypeScript RPC protocol for multiple environments (iframe, web worker, stdio, http, WebSocket)
TypeScript★ 173↓ 1,778/moSep 20, 2026
TypeScript★ 0↓ 7,947/moSep 11, 2026

Tewr/BlazorWorkerLibrary for creating DotNet Web Worker threads/multithreading in Client side Blazor
C# · HTML · CSS★ 483Sep 15, 2026
TypeScript★ 0↓ 19.4K/moSep 8, 2026
TypeScript★ 0↓ 17.2K/moOct 20, 2026
npm63Moderatehealth index
TypeScript★ 21↓ 79.9K/moAug 25, 2026
npm63Moderatehealth index
TypeScript★ 0↓ 10.2K/moSep 8, 2026
npm · crates.io62Moderatehealth index

siinghd/brookmdZero-dep streaming markdown for the browser — Rust→WASM, 100% CommonMark 0.31 + GFM. Built to not melt the main thread on concurrent LLM streams.
Rust · TypeScript★ 7↓ 509/moSep 10, 2026
npm59Moderatehealth index

eshaz/wasm-audio-decodersBrowser and NodeJS Web Assembly audio decoder libraries that are highly optimized for size and performance.
JavaScript · C★ 572↓ 25.4M/moOct 1, 2026
npm59Moderatehealth index
TypeScript★ 0↓ 6,958/moSep 18, 2026
npm51Moderatehealth index
TypeScript · JavaScript★ 2↓ 3,464/moSep 18, 2026
npm50Moderatehealth index

fideus-labs/worker-poolA Web Worker pool with bounded concurrency, plus a companion package that accelerates zarrita codec operations on Web Workers.
TypeScript · JavaScript★ 5↓ 6,332/moSep 18, 2026
TypeScript★ 3,532↓ 3.5M/moAug 27, 2026
JavaScript★ 1,174↓ 30.4M/moSep 17, 2026
TypeScript★ 3↓ 36K/moOct 7, 2026

accelatrix/accelatrixA parallel functional programming framework for in-browser processing of enumerations of business entities
TypeScript · HTML★ 1↓ 64/moSep 16, 2026