# sveltejs/sapper

The next small thing in web development, powered by Svelte

Repository: https://github.com/sveltejs/sapper
Canonical: https://ross.abutalabs.com/products/sapper
Homepage: https://sapper.svelte.dev
Language: TypeScript
License: MIT
License Family: permissive
Archived: true
Last push: 2023-01-11T17:18:27+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3187, "days_push": 1330, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6919, forks 411 (observed 2026-08-28T04:09:51.411772+00:00)

## What it is
Sapper is a web application framework built on Svelte that provides server-side rendering, file-based routing, code-splitting, and offline support. It has been deprecated in favor of its successor, SvelteKit, and receives no further bug or security fixes.

## Use cases
- build a server-rendered Svelte app
- migrate a legacy Sapper project to SvelteKit
- understand how SvelteKit evolved from Sapper
- maintain an existing Sapper codebase
- compare Sapper with Next.js for Svelte apps

## When to choose
- you are maintaining an existing Sapper application that cannot yet be migrated
- you need to study Sapper's architecture for historical or migration purposes

## When to avoid
- starting any new project - use SvelteKit instead
- you need security fixes or bug fixes
- you want long-term community support

## Facets
- artifact type: framework
- maturity: abandoned
- function: ssr, web-framework, routing, static-site-generator
- domain: web-development, frontend, developer-tools
- platform: cross-platform
- tags: svelte, deprecated, sveltekit-predecessor, server-side-rendering, file-based-routing, nodejs, web-server

## Member repositories
- sveltejs/sapper (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:51.411772+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:41:26.131656+00:00, confidence not recorded.
  - readme: https://github.com/sveltejs/sapper (fetched 2026-08-28T04:09:51.411772+00:00, sha f724ef3ce6ca)
  - homepage: https://sapper.svelte.dev (fetched 2026-08-29T08:37:29.404842+00:00, sha 472d6b80352d)
  - site_page: https://sapper.svelte.dev/docs (fetched 2026-08-29T08:37:29.414530+00:00, sha e46944c7e4f1)
  - site_page: https://sapper.svelte.dev/faq (fetched 2026-08-29T08:37:29.418300+00:00, sha 14a3c16df2a3)
- Data as of 2026-08-30T08:39:29.467469+00:00.