A platform-independent reactive GUI library

2 unstable releases

Uses new Rust 2021

0.1.0 Dec 29, 2021
0.0.0 Dec 4, 2018

#85 in GUI

35 downloads per month
Used in 2 crates (via avalanche-web)


1.5K SLoC


Book | Docs | Examples | Roadmap

Avalanche is a performant library for building declarative, performant UIs. It analyzes functional component definitions at compile time to generate efficient and precise app updates. It is bundled with avalanche-web, which provides facilities and components for building WebAssembly web apps. This library is in early stages of development, and should not yet be used in production.

This crate does not respect semver for 0.1.x.

How it works

Functions marked with #[component] define UI declaratively by returning other components. Component parameters and state are augmented by tracking, a system where avalanche tracks whether variables have been updated, only updating the UI for changed data. This allows for higher performance while keeping code ergonomic.

Getting started

To learn the library, we highly recommend you check out the avalanche book, which gives a primer on creating and building a web app using avalanche and avalanche web. The todomvc example is a great example app for getting a feel for basic avalanche idioms.


Licensed under either of

at your option.


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.


~25K SLoC