# rxRust/rxRust

Zero-cost & Type-safe Reactive Extensions for Rust. Supports both high-performance single-threaded (Local) and thread-safe (Shared) contexts. WASM & Tokio ready.

Repository: https://github.com/rxRust/rxRust
Canonical: https://ross.abutalabs.com/products/rxrust
Homepage: https://rxrust.github.io/rxRust/
Language: Rust
License: MIT
License Family: permissive
Topics: rx, observable, reactive-programming, rust, stream-processing, wasm, zero-cost, frp
Last push: 2026-09-02T02:08:54+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 35, longevity 100
- inputs: {"age_days": 2664, "days_push": 1, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1108, forks 69 (observed 2026-09-03T02:15:17.579560+00:00)

## What it is
rxRust is a zero-cost, type-safe Rust implementation of Reactive Extensions (Rx) for functional reactive programming with asynchronous event streams. It supports both single-threaded (Local) and thread-safe (Shared) execution contexts, and works with Tokio and WebAssembly.

## Use cases
- handle asynchronous event streams declaratively in Rust
- build event-driven applications with observable streams
- process streams without locking overhead in single-threaded contexts
- share reactive streams across threads safely
- use reactive programming in WebAssembly apps
- integrate observables with Rust futures and async/await

## When to choose
- you want RxJS-style observable/operator patterns in Rust
- you need zero-cost stream abstractions with compile-time context selection
- you're building UI, WASM, or single-threaded event-loop applications
- you need both local and thread-safe reactive streams with one API

## When to avoid
- you only need simple async iteration - Rust's Stream trait or tokio-stream may suffice
- you need a full-featured mature Rx implementation with extensive operators
- your project avoids generic-heavy APIs that can slow compile times

## Facets
- artifact type: library
- maturity: active
- function: streaming, concurrency, middleware
- domain: developer-tools, web-development
- platform: rust, wasm, cross-platform
- tags: reactive-extensions, observables, frp, async-streams, zero-cost-abstraction, tokio, reactive-programming

## Member repositories
- rxRust/rxRust (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:17.579560+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 2026-08-30T06:44:16.072672+00:00, confidence not recorded.
  - readme: https://github.com/rxRust/rxRust (fetched 2026-09-03T02:15:17.579560+00:00, sha 9551dbe04db2)
  - homepage: https://rxrust.github.io/rxRust/ (fetched 2026-08-29T12:47:38.855031+00:00, sha 44136fa355b3)
  - registry_crates: https://crates.io/api/v1/crates/rxrust (fetched 2026-08-29T12:47:38.857628+00:00, sha 2d0cce7c78f3)
- Data as of 2026-08-30T08:39:29.467469+00:00.