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Leptos

A Rust framework for building fast web apps that run in the browser, on the server, or both.

GitHub Download v0.8.23
Stars
21.5k
Forks
923
Licence
MIT
Language
Rust
Last update
5 days ago
Type
Library

What it is

Leptos is a web framework written in Rust for building interactive websites and web apps. It can render pages in the browser, on a server, or on the server with interactivity added in the browser, and it includes a reactive system that updates only the parts of the page that change. It also lets server-only code, such as database calls, sit next to the UI code that uses it without a separate API layer.

  • Build a counter or form-driven UI with reactive signals and the view! macro
  • Write server functions that the browser calls like normal functions
  • Render pages on the server and stream data and HTML with Suspense
  • Create a full-stack app using the cargo-leptos starter templates for Axum or Actix

Great for

  • Rust developers who want to build full web apps in one language
  • Teams that want server-side rendering with browser interactivity in Rust
  • Developers who want fine-grained updates instead of a virtual DOM
  • People already comfortable with Rust's compiler and type system

Not ideal for

  • Beginners who are new to programming, since Rust has a steep learning curve
  • Projects that need a mature, long-established ecosystem, since the README describes the project as still having bugs and missing features
  • Teams that need a stable release today, since the latest release is a release candidate (v0.9.0-rc0) with no binaries
Step-by-step guide: how to use LeptosInstall, first run, examples, tips and FAQs
Leptos vs Solid

How to get it

  1. 1

    Install with a package manager

    You'll need: Rust toolchain (via rustup) · cargo-leptos

    Install the cargo-leptos build tool

    cargo install cargo-leptos --locked

    Create a new project from the Axum starter template

    cargo leptos new --git https://github.com/leptos-rs/start-axum

    Enter the project folder

    cd [your project name]

    Start the dev server with live rebuilds

    cargo leptos watch
  2. 2

    Run it

    • Install cargo-leptos with cargo install cargo-leptos --locked
    • Create a project from the start-axum template with cargo leptos new
    • Change into the project folder
    • Run cargo leptos watch and open http://localhost:3000/ in a browser
  3. 3

    Get the most out of it

    • Read the Book and API docs on docs.rs for the reactive primitives and view! macro
    • Browse the examples folder in the repo, such as js-framework-benchmark and hackernews_js_fetch
    • Use the awesome-leptos list for libraries and example projects
    • Check the README's notes on getrandom and rand setup if you compile to wasm and use randomness
    • Use the Discord or Matrix channels listed in the README for help

Downloads

Source code (.zip)main branch · straight from GitHubRelease v0.8.23Release notes and sourceOfficial website & docsleptos.dev

Strengths

  • Fine-grained reactivity updates individual DOM nodes without re-running whole components, according to the README
  • Supports client-side, server-side, and hydrated rendering in one framework
  • Server functions let client and server code share one codebase without a separate REST API

Trade-offs

  • Requires learning Rust, and the README notes the project has bugs that may take time to fix at the framework level
  • Latest release is a release candidate, and the README says the author expects no major breaking changes but gives no formal stability guarantee
  • Documentation is described as a work in progress in the README

How it compares

ProjectStarsTypeLevelUpdatedBest for
leptos (this)21.5kLibraryadvanced5 days agoRust developers who want to build full web apps in one language
solid36.2kLibraryintermediate4 days agoDevelopers who want fine-grained control over what re-renders in a web UI
marko14.5kFrameworkintermediate6 days agoJavaScript developers who prefer HTML-style templates over JSX
preact39kLibraryintermediate4 days agoWeb developers who already know React and want a lighter library
html2canvas31.9kLibrarybeginner2.3 years agoFront-end developers who want to let users save or export part of a page as an image
react-loadable16.5kLibraryintermediate2.3 years agoReact developers whose main JavaScript bundle has grown large

Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.