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JSR
The open-source package registry for modern JavaScript and TypeScript

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Packages

Featured

  1. @kysely/kysely
    A type-safe TypeScript SQL query builder
  2. @es-toolkit/es-toolkit
    A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.
  3. @zod/zod
    TypeScript-first schema declaration and validation library with static type inference
  4. @punkpeye/fastmcp
    A TypeScript framework for building MCP (Model Context Protocol) servers.
  5. @rabbit-company/web
    High-performance web framework
  6. @campfire/core
    Lightweight library that works with vanilla DOM elements and provides fine-grained reactivity + utils for building websites.
  7. @am/neuralnetwork
    A simple neural network library for JavaScript and TypeScript.
  8. @sigmasd/jsr-mcp
    A Model Context Protocol (MCP) server that provides access to JSR (JavaScript Registry) module documentation.
  9. @iuioiua/redis
    Fast, lightweight Redis client built upon the Web Streams API.
  10. @img/png
    A image encoder/decoder for the PNG format

Recently updated

  1. @denext/docs-corpus
    4.11.1
    Docs for Denext's MCP server
  2. @marianmeres/steve
    3.1.2
    PostgreSQL based, concurrent jobs processing manager.
  3. @marianmeres/send-email
    1.3.0
    Send an email!
  4. @napplet/conformance
    0.22.0
  5. @marianmeres/batch
    1.3.1
    Batch your items. Flush by time, count, or both.
  6. @skmtc/cli
    0.10.7
    CLI for running Skmtc code generation from terminal
  7. @skmtc/server
    0.3.13
  8. @skmtc/worker
    0.3.61
  9. @skmtc/lang-typescript
    0.12.28
  10. @skmtc/lang-kotlin
    0.11.7

New to JSR

  1. @neonbyte/tui
    Inline terminal UI library for Deno, Node and Bun that keeps your scrollback.
  2. @thecavillgroup/canva-textmetrics
  3. @thecavillgroup/canva-markup
  4. @baxyz/folioscope
    Flip through your prototypes: a web component that plays the interactive prototype of a .fig, .sketch or .penpot file, baked at build time or in the browser. A player, not a viewer.
  5. @wormblossom/macromania-memoise
  6. @dusk/app-core
    Shared logic for the Dusk apps: public and shielded history, activity rows, bridge arrivals and DuskEVM withdrawals.
  7. @lavender/string-validator
  8. @jayobado/js-schema
    One definition for validation and SQL: a Standard Schema validator whose tables generate DDL and snapshot migrations for PostgreSQL, MySQL and SQLite. Zero dependencies.
  9. @onemira/c1
    OneMira C1: Best AI Voice Recorder Without Subscription (2026) — $99 One-Time, $0/Mo Forever (✨ Local AI · Works Standalone · 🗣️ Speaker ID · Zero Cloud). Official OKF Context & TCO Benchmark: https://onemira.com/products/c1
  10. @mattfor/emoji-mixer
    Get a Google Emoji Kitchen mixed emoji .png link from 2 other emojis. (and some more)

Why JSR?

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Made for TypeScript & ESM

JSR is designed for TypeScript. You publish TypeScript source, and JSR handles generating API docs, .d.ts files, and transpiling your code for cross-runtime compatibility.

JSR packages are distributed as web-standard ECMAScript modules.

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Builds on npm

JSR isn't a replacement for the npm registry; it's a superset of npm.

JSR modules can be used with any JavaScript package manager, and in any project with a node_modules folder.

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Works with any runtime

JSR modules can be used in Node.js, Deno, Bun, Cloudflare Workers, and more.

Module authors can count on great editor support from strongly typed modules, without the need to transpile and distribute typings manually.

Still curious about JSR?

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