Open-source alternatives to Reactive Streams Jvm

RxSwift is a reactive programming library for Swift that provides a framework for managing push-based data flows and composing asynchronous, event-based programs. It utilizes observable sequences and functional operators to transform and filter asynchronous sequences through a declarative approach. The library is distinguished by its ability to link asynchronous data streams directly to user interface elements, automating view updates via reactive data binding. It includes specialized tools for tracking UI control properties and events on the main thread, as well as the ability to encapsulate

RxJava is a reactive stream processing framework and JVM reactive extensions library. It serves as an asynchronous dataflow orchestrator used to compose event-based programs by transforming, combining, and consuming real-time data flows on the Java Virtual Machine. The project distinguishes itself through integrated backpressure flow control, which manages the emission rate between producers and consumers to prevent memory exhaustion. It further provides mechanisms for concurrent thread management and parallel data processing to offload blocking operations and maintain application responsiven

Bacon.js is a JavaScript functional reactive programming library used for coordinating complex asynchronous data flows. It functions as an observable event stream framework and an asynchronous data flow orchestrator, allowing developers to model events as declarative streams and properties. The library distinguishes itself through its ability to manage reactive state and synchronize timing across multiple sources. It provides specialized mechanisms for atomic state synchronization to prevent glitches in derived properties and offers advanced coordination strategies such as asynchronous stream

RxGo is a functional reactive programming library and an implementation of ReactiveX for the Go language. It serves as an asynchronous stream processing toolkit designed to coordinate event-based programs and data flows using the observable pattern. The library enables the construction of asynchronous processing pipelines that transform, filter, and combine event sequences. It distinguishes itself through the use of functional operators to compose these pipelines and provides mechanisms for managing concurrent execution. The toolkit covers a broad range of stream orchestration capabilities,

RxPY is a functional reactive programming library and a ReactiveX observable library for Python. It serves as an asynchronous stream processor and event-driven coordination framework used to build data pipelines that react to changes in state or streams of events over time. The library provides a toolkit for composing asynchronous and event-based programs using observable sequences and operators. It distinguishes itself through the use of configurable schedulers to manage concurrency, timing, and subscription lifecycles. The project covers a wide range of stream processing capabilities, incl

This project is a technical study and analysis guide focused on the internal architecture of Node.js. It provides an in-depth examination of the runtime, focusing on how the engine manages memory handles, executes asynchronous operations, and implements core module logic. The guide specifically analyzes the integration of native C++ classes and functions into JavaScript and documents the behavior of the libuv event loop. It includes detailed references for optimizing performance by identifying V8 compiler bailouts and profiling execution to improve resource efficiency. The material covers a

RxJS is a library for reactive programming that provides a framework for composing asynchronous and event-based programs. It utilizes observable sequences to model data flows, allowing developers to manage complex sequences of events through a declarative programming interface. The library implements the observer pattern to facilitate decoupled communication between data producers and subscribers. By employing a lazy execution model, streams remain dormant until a consumer explicitly subscribes, at which point data production is triggered. This approach enables the construction of predictable

The Reactive Extensions for JavaScript

ReactiveCocoa is a functional reactive programming framework and Cocoa UI binding layer. It provides a library for composing asynchronous data streams and managing application state through signals and functional operators. The framework functions as an Objective-C data binding library that links object properties and method calls to reactive streams using runtime dynamism and swizzling. It includes a utility to convert traditional key-value observation notifications into composable streams for synchronized state tracking. The project covers reactive UI programming by connecting interface el

JSON Canvas is an interoperable whiteboard specification and data exchange format. It provides a standardized JSON schema for representing nodes, edges, and spatial layout information, allowing different infinite canvas and digital whiteboard applications to read and write the same files. The project focuses on digital whiteboard interoperability and spatial data standardization to prevent vendor lock-in. By using a coordinate-based layout mapping and a machine-readable format, it enables cross-platform visual mapping and the migration of spatial data between different software environments w

This project is a shared technical specification and standard interface for dependency injection containers in PHP. It defines a common set of interfaces for retrieving services and dependencies, ensuring that different container implementations remain interoperable across the PHP ecosystem. By establishing a standardized API for dependency retrieval, the project allows developers to create libraries that function with any compliant container. This prevents vendor lock-in and enables different container implementations to be swapped without requiring changes to the application code. The spec

RxKotlin is a reactive programming library and asynchronous stream processor that provides Kotlin language extensions for composing event-based data streams. It serves as a set of Kotlin bindings for RxJava, allowing developers to transform, filter, and flatten sequences of data emitted over time. The library focuses on integrating RxJava patterns into Kotlin projects by applying language-specific conventions and idioms. It utilizes extension functions to simplify reactive programming patterns, reduce boilerplate, and optimize workflows within the reactive ecosystem. The toolkit covers a bro

Simple Cache is a technical specification and interface standard for PHP applications. It defines a common set of methods for interacting with cache storage, ensuring that different storage implementations can be used interchangeably. As the PSR-16 implementation standard, it provides a consistent way for independent PHP libraries and frameworks to store and retrieve cached data. This interoperability allows software packages to work with any compliant cache backend without requiring changes to the application code. The specification focuses on standardizing cache interfaces and interactions

This project is a standardized specification for logging APIs in PHP. It defines a common logging interface and a set of severity levels to ensure ecosystem-wide compatibility between different logging implementations. The project focuses on PHP library interoperability by providing a vendor-neutral interface. This allows various software packages to record application events consistently without being tied to a specific logging vendor, adhering to the PSR-3 implementation standard. The specification covers architectural primitives for logging abstractions, including implementation-agnostic

Vector is a high-performance observability data pipeline designed to collect, transform, and route logs, metrics, and traces across distributed infrastructure. It functions as a modular engine that decouples data ingestion from processing and transmission, utilizing a component-based architecture to connect diverse sources to multiple destinations. The project distinguishes itself through a focus on reliability and flow control. It implements backpressure-aware data movement to prevent data loss during traffic spikes and utilizes disk-backed event buffering to ensure durability during network

UniRx is a reactive programming library and event orchestration framework for the Unity engine. It implements observable sequences and functional operators to transform callbacks, coroutines, and engine events into cancellable data streams for unified asynchronous event handling. The library provides a reactive UI binding system that synchronizes data models with user interface elements to trigger automatic visual updates. It includes a type-based publication and subscription system to route messages between producers and consumers, decoupling internal game components. The framework covers a

This repository is a collection of practical implementation patterns and reference samples for using RxJava 2 to manage asynchronous data streams in Android applications. It serves as a reactive programming implementation guide, providing code examples for handling complex event-driven logic and asynchronous patterns within mobile environments. The project distinguishes itself by providing specific reference implementations for common mobile challenges, such as real-time search with debouncing, on-demand list pagination for infinite scrolling, and cache-first data streaming to reduce perceive

Rx.NET is a reactive programming framework and library for the .NET ecosystem used to compose asynchronous and event-based programs. It provides an observable data stream API that treats live sequences of information as collections, allowing developers to coordinate asynchronous event workflows using a declarative syntax. The project functions as an extension of language integrated query patterns to asynchronous streams. This allows for the filtering and transformation of asynchronous notifications and event sequences through the application of query operators. The framework covers asynchron

RIBs is a mobile architecture framework that structures applications around isolated, lifecycle-managed units of business logic called RIBs. Each RIB separates routing, business logic, and construction into distinct classes through the Router-Interactor-Builder pattern, with hierarchical dependency injection scoping dependencies per node and static analysis enforcing architectural rules at build time. The framework enforces automatic disposal of Rx subscriptions scoped to interactor lifecycles, blocking compilation when subscriptions lack proper disposal to prevent memory leaks. It supports v

Js-csp is a concurrency library that implements communicating sequential processes with channels and generator-based routines for asynchronous programming in JavaScript. It provides a framework for building data processing pipelines and managing concurrent workflows, bringing Go-style channels and process coordination primitives to applications. The library coordinates message passing through buffered channels, stream mixing, multi-channel selection, and pub-sub broadcasting. Communication pathways support unbuffered rendezvous, fixed buffers, sliding windows, and dropping overflow. Operation

This project is a library of algorithms for transforming, filtering, and combining asynchronous data streams in Swift. It provides a toolkit for managing asynchronous sequences, offering a concurrent sequence processor to merge, zip, and concatenate multiple streams into single outputs. The library distinguishes itself through specialized timing and flow control mechanisms. It implements asynchronous back-pressure to synchronize producer and consumer speeds and provides a toolkit for event timing, including debouncing, throttling, and the generation of periodic timers. The capability surface

Capnweb is a distributed object communication library and Cap'n Proto RPC framework. It enables type-safe remote procedure calls between clients and servers using shared schemas and generated stubs to invoke methods on remote objects as if they were local. The project utilizes an object-capability security model to govern access to remote resources through unforgeable tokens. It provides a bidirectional network layer that multiplexes asynchronous calls and data streams over persistent WebSocket connections and includes a remote resource lifecycle manager that uses reference counting to automa

Clojure is a general-purpose, functional programming language hosted on the Java Virtual Machine. It is a homoiconic S-expression language that represents programs as nested data structures, allowing code to be manipulated and evaluated as data. The project provides a framework for JVM interoperability, enabling the invocation of Java methods and integration with other JVM-based languages. It distinguishes itself through a persistent data structure library that uses bitmapped vector tries to manage immutable collections and a programmatic REPL for interactive software development and real-tim

jStorm is a distributed stream processing engine designed for executing low-latency computations on high-volume data streams using Apache Storm topologies. It functions as a real-time data analytics platform and distributed task orchestrator that manages complex data pipelines via directed acyclic graph execution. The system provides a scalable framework for data pipeline management, incorporating backpressure-aware flow control to regulate ingestion rates and dynamic resource allocation to adjust computing resources based on real-time demand. It maintains compatibility with Apache Storm conf

Armeria is a Netty-based microservice framework used for building high-performance asynchronous services. It functions as a multi-protocol RPC server capable of exposing gRPC, Thrift, and REST services on a single unified port. The project is distinguished by its ability to run diverse communication protocols simultaneously and its integrated RPC debugging web console, which allows for the discovery and invocation of remote procedure calls via JSON. It also includes a gRPC to JSON transcoder to enable web client compatibility with Protobuf services. The framework provides a comprehensive sui

Zeebe is a cloud-native workflow engine and distributed state machine designed for business process orchestration using BPMN and DMN standards. It operates as a high-performance gRPC workflow runtime that executes complex business processes through a partitioned event-streaming architecture. The system also functions as an orchestrator for large language model agents, coordinating AI reasoning and tool use within deterministic business processes. The engine is distinguished by its peer-to-peer broker networking and a consensus-based data replication model that ensures high availability and fa

Hyper is a low-level networking library designed for building high-performance HTTP clients and servers. It provides a foundational toolkit for creating network services that leverage asynchronous execution and memory-safe data handling, supporting both HTTP/1 and HTTP/2 protocols. The library distinguishes itself through a protocol-agnostic architecture that separates transport logic from HTTP semantics. It utilizes a service-trait abstraction to decouple network logic from the underlying transport, enabling developers to inject custom middleware for request interception and response transfo