single-spa/single-spa

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

13878 stars · 926 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

single-spa is a JavaScript framework for building microfrontend architectures, acting as a top-level router that loads, mounts, and unmounts multiple applications on a single page. It lets teams combine apps written in different frameworks (React, Angular, Vue, etc.) with independent deployments and lazy loading.

Use cases

• combine react and angular apps in one page without refresh
• migrate an existing spa to a new framework incrementally
• deploy frontend apps independently per team
• lazy load parts of a single-page application for faster initial load
• split a large frontend into independently developed microfrontends
• route between multiple frontend applications by url

When to choose

• you have multiple teams needing independent frontend deployments
• you need to mix frameworks in one application
• you are incrementally migrating a legacy spa to a new stack
• you want lazy-loaded route-based code splitting across apps

When to avoid

• you have a small app or single team where a monolithic spa is simpler
• you need server-side rendering as a primary requirement
• your team is unfamiliar with module federation or import maps
• you want an out-of-the-box full framework rather than a routing/orchestration layer

Facets

framework · maturity stable

routing frontend-framework middleware web-development frontend microservices browser microfrontends single-page-applications spa lazy-loading frontend-architecture javascript nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="single-spa/single-spa")