# leptos-rs/leptos

Build fast web applications with Rust.

Repository: https://github.com/leptos-rs/leptos
Canonical: https://ross.abutalabs.com/products/leptos
Homepage: https://leptos.dev
Language: Rust
License: MIT
License Family: permissive
Topics: dom, fine-grained, isomorphic, reactive, rust, ssr, web, webassembly
Last push: 2026-08-24T16:29:57+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 90, longevity 100
- inputs: {"age_days": 1494, "days_push": 9, "days_rel": 69, "gap_med": 13.5, "n_releases_24m": 31}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 21244, forks 886 (observed 2026-08-28T04:11:31.489546+00:00)

## What it is
Leptos is a full-stack, isomorphic Rust web framework that uses fine-grained reactive signals to build declarative user interfaces compiled to WebAssembly. It supports server-side rendering with hydration and server functions that span client and server code in a single typed codebase.

## Use cases
- build web apps in rust
- rust alternative to react or solid
- server-side rendering with rust
- full-stack rust web framework
- reactive ui with signals in rust
- compile rust to webassembly for the dom
- write server functions without a separate api

## When to choose
- you want type-safe full-stack web development entirely in Rust
- you need fine-grained reactivity and targeted DOM updates without a virtual DOM
- you want SSR with hydration and progressive enhancement
- you prefer declarative JSX-like views or builder syntax in Rust

## When to avoid
- your team primarily works in JavaScript or TypeScript
- you need a mature ecosystem of off-the-shelf UI components
- you are building a simple static site where a static-site generator suffices
- you cannot adopt Rust or WebAssembly toolchains

## Facets
- artifact type: framework
- maturity: active
- function: web-framework, ssr, state-management, frontend-framework, templating, wasm
- domain: web-development, frontend, backend, cross-platform
- platform: rust, wasm, cross-platform
- tags: reactive-signals, fine-grained-reactivity, isomorphic, server-functions, full-stack, rust-web, wasm-bindgen, web-server

## Member repositories
- leptos-rs/leptos (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:31.489546+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 2026-08-29T16:58:27.478233+00:00, confidence not recorded.
  - readme: https://github.com/leptos-rs/leptos (fetched 2026-08-28T04:11:31.489546+00:00, sha d009c2b4a473)
  - homepage: https://leptos.dev (fetched 2026-08-29T07:56:56.021195+00:00, sha 5ae7c0ae5a24)
  - registry_crates: https://crates.io/api/v1/crates/leptos (fetched 2026-08-29T07:56:56.032476+00:00, sha c88019e81172)
  - site_page: https://book.leptos.dev (fetched 2026-08-29T07:56:56.030661+00:00, sha 6331c4631688)
- Data as of 2026-08-30T08:39:29.467469+00:00.