# sycamore-rs/sycamore

A library for creating reactive web apps in Rust and WebAssembly

Repository: https://github.com/sycamore-rs/sycamore
Canonical: https://ross.abutalabs.com/products/sycamore
Homepage: https://sycamore.dev
Language: Rust
License: MIT
License Family: permissive
Topics: rust, wasm, signals, sycamore, fine-grained-reactivity, ui, web-assembly
Last push: 2026-08-22T00:50:02+00:00

## Health v2 (maintenance only)
Score: 72/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 24, longevity 100
- inputs: {"age_days": 2007, "days_push": 12, "days_rel": 344, "gap_med": 162.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3344, forks 169 (observed 2026-08-28T04:07:56.989824+00:00)

## What it is
Sycamore is a reactive library for building web user interfaces in Rust compiled to WebAssembly, using fine-grained reactivity with signals instead of a virtual DOM. It supports SPA and SSR modes, async resources with suspense, built-in routing, and requires no JavaScript.

## Use cases
- build a web app frontend in Rust with WebAssembly
- create reactive UIs with signals and fine-grained updates
- server-side render a Rust web application
- write a web app without touching JavaScript
- build a counter or todomvc-style SPA in Rust
- load async data with suspense in a Rust frontend

## When to choose
- you want a Rust/WASM frontend with no JavaScript
- you prefer fine-grained reactivity over a virtual DOM
- you need SSR or hydration from a Rust UI library
- you want compile-time type-checked views

## When to avoid
- your team primarily writes JavaScript or TypeScript
- you need a mature ecosystem with abundant third-party components
- you target non-web platforms like mobile or desktop
- you need a 1.0-stable API, since Sycamore is still pre-1.0

## Facets
- artifact type: library
- maturity: active
- function: frontend-framework, web-framework, ssr, state-management, routing, templating
- domain: web-development, frontend
- platform: wasm, cross-platform, rust
- tags: fine-grained-reactivity, signals, no-javascript, rust-web-ui, solidjs-inspired, suspense, hydration, web-server

## Member repositories
- sycamore-rs/sycamore (main) score 72

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:56.989824+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 2026-08-29T18:41:02.301529+00:00, confidence not recorded.
  - readme: https://github.com/sycamore-rs/sycamore (fetched 2026-08-28T04:07:56.989824+00:00, sha 96175188a534)
  - homepage: https://sycamore.dev (fetched 2026-08-29T09:34:12.970524+00:00, sha f602940e9e2e)
  - registry_crates: https://crates.io/api/v1/crates/sycamore (fetched 2026-08-29T09:34:12.975119+00:00, sha d5c55671f12e)
  - site_page: https://sycamore.dev/post/announcing-v0-6-0 (fetched 2026-08-29T09:34:12.973232+00:00, sha 653a6af3966b)
- Data as of 2026-08-30T08:39:29.467469+00:00.