# JSR

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

- **Canonical URI:** https://www.vioscale.ai/software/jsr
- **Category:** Package Registries
- **Homepage:** https://jsr.io
- **Also known as:** jsr
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-03T22:36:21.669Z

## Vioscale score

**40.4 / 100**, confidence 13% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 57.8 | 14 | 809.4 | ✓ |
| github_stars | 65.5 | 4 | 262 | ✓ |
| integrations | 0 | 8 | 0 | - |
| github_activity | 19 | 16 | 303.3 | ✓ |
| release_cadence | 0 | 10 | 0 | - |
| security_posture | 0 | 26 | 0 | - |
| package_downloads | 0 | 22 | 0 | - |
| stackoverflow_activity | 0 | 8 | 0 | - |

## About

A modern package registry for JavaScript and TypeScript that works with multiple runtimes (Node.js, Deno, Bun, Cloudflare Workers, and browsers) and is backwards compatible with npm. Packages are published as ES modules with automatically generated API documentation and type definitions.

_Independently observed._

## Platform & deployment

- **Platforms:** CLI, Web
- **Deployment:** Cloud / SaaS, Self-hosted

## Capabilities

_The capabilities that matter for Package Registries. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Core** | |
| Role | Public registry |
| **Ecosystem** | |
| Ecosystem / language | JavaScript |
| **Deployment** | |
| Deployment | Both |
| **Formats** | |
| Package formats supported | Single ecosystem |
| **Hosting** | |
| Private / scoped packages | ✓ |
| Upstream proxy / caching | - |
| **Resolution** | |
| Lockfile / deterministic installs | - |
| Workspaces / monorepo | ✓ |
| Content-addressable store | - |
| **Supply chain** | |
| Supply-chain integrity | ✓ |
| Vulnerability / licence scanning | - |
| **Licensing** | |
| Openness | Open-source |
| **Pricing** | |
| Pricing model | Free / OSS |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 3 | [link](https://github.com/jsr-io/jsr/pulse) | 2026-08-03 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 2,968 | [link](https://github.com/jsr-io/jsr) | 2026-08-03 | 90% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Rust | [link](https://github.com/jsr-io/jsr) | 2026-08-03 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | MIT | [link](https://github.com/jsr-io/jsr) | 2026-08-03 | 95% (high) |

---
*Source: Vioscale (https://www.vioscale.ai/software/jsr). Independent, evidence-based software intelligence. Cite the canonical URI.*