Reactive Programming GitHub Repositories (2026) · Open Source Tools

Modern MVVM framework on the C++23 baseline — cross-platform, layered, coroutine-first. Reactive DAG (Property/Computed/Effect), Task<T>, and pluggable adapters (Continuo-powered HTTP).

🏎️ Streams & Reactive Programming paradigm for Go: declarative and composable API for event-driven applications

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

Reactive collections based on Rx.Net

Reatom - the ultimate state manager

HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support

SignalDB is a reactive, local-first JavaScript database designed for modern web applications. It combines signal-based reactivity with powerful local data management and real-time synchronization capabilities.

Implementation of async observable/observer (Reactive Programming) in C++ with care about performance and templates in mind in ReactiveX approach

🦾 Mech is a programming language for building data-driven systems like robots, games, and interfaces. Start here!

A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.

Async State Management without the Management. REST, GraphQL, SSE, Websockets

Simple, scalable state management.