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JSPM

Free#12 of 19 in JavaScript Package Managers

JSPM: A focused open-source toolkit for import-map and CDN-based web projects. Ranked #12 of 19 in JavaScript Package Managers by our editors (7.0/10); pricing: Open source; best for import-map and CDN-based web projects.

7.0/10Editor score
Visit JSPM
JSPM7.0 Visit JSPM

At a glance

  • Editor score
    7.0 / 10
  • Pricing
    Open source
  • Best for
    Import-map and CDN-based web projects
  • Paid from
    Free
  • Workspace support
    Yes
  • Facts checked
    20 Sep 2026
JSPM screenshot

  • Where it wins

    • Installs and resolves dependencies through browser import maps
    • Supports offline, online, and no-cache package-fetch modes
    • Includes local development, Rollup builds, and hosted APIs

  • Where it doesn't

    • Its browser-focused workflow is less general-purpose than mainstream managers
    • JSPM publishing is documented as experimental preview
    • Package delivery is directed toward npm with JSPM's CDN

Our verdict on JSPM

JSPM is an open-source JavaScript package-management toolkit built around browser import maps. It is aimed at web developers working with native ES modules, browser standards, CDN-based delivery, or local-first workflows. The CLI installs and resolves dependencies, generates import maps, serves applications locally, builds packages with RollupJS, and supports publishing to JSPM providers. JSPM also provides a hosted generator, package download APIs, and the jspm.io CDN for optimized npm packages.

Its strongest fit is a workflow that treats import maps as a central dependency mechanism. Import-map installation and resolution, version locking through import maps, multiple CDN and local package providers, and offline, online, and no-cache fetch modes give teams control over how browser dependencies are selected and delivered. The local development server adds hot reload and TypeScript type stripping, while zero-configuration RollupJS builds cover package creation without requiring a separate build setup. Integration points include Vite, Import Map Rails, Symfony AssetMapper, and Node.js.

JSPM is open source, so its model is distinct from package managers organized around paid tiers. The published capabilities include workspaces, lockfiles, peer-dependency handling, package publishing, offline caching, and global installation. Publishing is documented as experimental preview, and reliable package delivery is directed toward npm with JSPM's CDN. Teams seeking import-map resolution, CDN access, and browser-oriented package workflows should consider JSPM; projects that need a more general-purpose package-management approach may find its specialized web focus less suitable.

Your product? Our editors can test JSPM in depth and publish a review, labelled as paid · from $149/mo →

JSPM pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.
See plans on jspm.org

JSPM fact sheet

Free planNot verified
Paid fromFree
Workspace supportYes
Lockfile supportYes
Peer dependency handlingYes
Package publishingYes
Offline package cacheYes
Global installationYes
DeploymentCloud, Self-hosted
PlatformsWeb
SupportDocs
Built forSolo, Small business (editorial estimate)
Integrations4 integrations: Vite, Import Map Rails, Symfony AssetMapper, Node.js See all →
PricingOpen source
Websitejspm.org
Facts checked20 Sep 2026

JSPM integrations

JSPM lists 4 integrations on its own site.

  • Vite
  • Import Map Rails
  • Symfony AssetMapper
  • Node.js

See all JSPM integrations →

Alternatives to JSPM

See all JSPM alternatives →

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Featured on iTechGuides

Featured on iTechGuides — JSPM 7.0/10

JSPM is listed in our JavaScript Package Managers directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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