Open-source alternatives to React Query

Relay is a GraphQL client framework and state manager used for building data-driven applications. It functions as a declarative data fetching layer and a GraphQL compiler that transforms declarations into optimized runtime code with automatic type generation. The framework distinguishes itself through a build-time compilation process that generates optimized queries and a data masking system that prevents components from accessing undeclared data. It employs a normalized client-side cache to maintain consistency across entities and an optimistic update mechanism to provide immediate interface

Effector is a reactive state management library and data flow orchestrator designed for building complex, event-driven applications. It models application logic as a directed acyclic graph, where state updates and asynchronous side effects propagate automatically through declarative pipelines. By decoupling business logic from user interface layers, it allows developers to maintain state in independent containers that communicate via standard interfaces, ensuring the system remains framework-agnostic. The library distinguishes itself through its robust support for isolated execution scopes, w

Easy-peasy is a React state management library and typed framework that provides a centralized store for managing global application state. It functions as an immutable state store and an async state orchestrator, ensuring end-to-end type safety for state definitions, actions, and derived values. The library distinguishes itself by converting direct mutation syntax into immutable updates to simplify the management of nested data. It includes a mechanism for persisting the state tree to storage and rehydrating it during the application boot process, with the ability to suspend the user interfa

Riverpod is a reactive state management framework for Dart that manages application state through providers which automatically track dependencies and rebuild dependents when values change. It functions as an asynchronous data caching library, caching results of async operations and exposing loading, error, and data states to widgets without manual future handling. The framework includes a provider composition system that combines multiple providers into derived values that recompute automatically when any dependency changes, along with code generation for state providers that reduces boilerpl

opennextjs-aws is a serverless infrastructure adapter and deployment tool that transforms Next.js build artifacts into compatible packages for hosting on AWS Lambda and S3. It functions as a deployment adapter that maps framework-specific outputs to serverless functions and object storage. The project distinguishes itself by implementing serverless-specific optimizations, including a cache manager that synchronizes incremental static regeneration and fetch caches via S3 or DynamoDB. It features a cold start optimizer that uses bundle minification and scheduled function warming to reduce laten

Data-client is an asynchronous state management library designed to synchronize server data with frontend applications. It functions as a normalized cache manager that maps complex API responses into structured, relational entities, ensuring data consistency across the entire application. By providing a unified communication layer, the library supports both REST and GraphQL, allowing developers to bind network data directly to user interface components through declarative hooks. The library distinguishes itself through a robust architecture for optimistic user interface development, where loc

AI Town is a TypeScript-based simulation engine used to create virtual environments where autonomous characters interact and socialize. It functions as a framework for orchestrating multiple AI agents within a persistent digital world, utilizing language models and a game engine to drive character behavior and social interactions. The project differentiates itself through a dedicated agent sandbox and a vector database agent store, which allow for the management of agent memories and world state. It integrates generative AI for background music and provides tools for simulation world design,

Apollo Client is a frontend GraphQL integration layer and client library used to fetch, manage, and cache data from a GraphQL server in web and mobile applications. It functions as a state management framework that synchronizes remote server data with local application state. The project provides a TypeScript wrapper for executing GraphQL queries and mutations, ensuring type-safe API integration with automatic validation and code completion. The library manages data fetching and synchronization between the backend and the user interface. It includes capabilities for caching GraphQL results l

Apollo Client is a GraphQL client library and data fetching framework used to request data from a GraphQL server and synchronize that state within a frontend application. It functions as a remote state manager and a local state management tool, allowing developers to define client-side schemas and resolvers for data that does not reside on a remote server. The project features a normalized GraphQL cache that identifies objects by ID to ensure referential equality and consistent data updates across different queries. It also includes a GraphQL API mocking tool to simulate server responses and

Inertia is a server-driven frontend framework designed to create monolithic single page applications. It acts as a state synchronization protocol and client-side routing bridge, allowing developers to build interactive experiences using modern JavaScript component libraries while keeping routing and controllers on the server. This approach eliminates the need for a separate REST or GraphQL API layer by passing data from server controllers to frontend components as props via JSON payloads. The framework distinguishes itself by utilizing adapter-based integration to link various backend environ

This library provides a collection of strongly typed hooks designed to manage asynchronous tasks, component state, and DOM interactions within user interfaces. It serves as a utility toolkit for tracking data changes, caching asynchronous results, and synchronizing references across both server and browser rendering environments. The project distinguishes itself by offering specialized mechanisms for regulating high-frequency user inputs through debouncing and throttling techniques. It simplifies complex browser interactions, such as keyboard shortcuts, clipboard access, and viewport visibili

This project is a client-side data management library and query orchestrator designed to synchronize remote server state with local client state. It functions as a type-safe state manager and cache orchestrator that coordinates data loading across diverse backends, including REST, GraphQL, and WebSockets. The system distinguishes itself through a durable workflow engine for executing asynchronous functions with persisted state and deterministic replay. It also provides a standardized AI integration adapter to connect large language models to application data, supporting real-time response str

React is a JavaScript library for building user interfaces through the composition of modular, self-contained components. It employs a declarative programming model where developers describe the desired visual state, and the library automatically manages the underlying document updates and state synchronization. By utilizing a virtual representation of the document, it calculates and applies minimal changes to the browser, ensuring efficient rendering even in complex applications. The library distinguishes itself through a sophisticated scheduling system that manages rendering work in increme

Leptos is a full-stack Rust web framework designed for building reactive applications that share logic and types between the server and the browser. It provides a comprehensive toolkit for developing web interfaces where specific DOM nodes update automatically in response to changes in underlying reactive signals, rather than re-rendering entire component trees. The framework distinguishes itself through a fine-grained reactivity model that tracks dependencies at the individual data point level. It utilizes compile-time template transformation to convert declarative HTML-like syntax into opti

This library provides a framework for building type-safe server actions within Next.js, focusing on end-to-end validation and structured communication between the client and server. It wraps standard server functions to inject schema-based input validation, ensuring that only correctly formatted data reaches backend logic while providing consistent, typed error reporting for client-side consumption. The project distinguishes itself through a robust middleware orchestration system that allows developers to execute sequences of logic—such as authentication, logging, or data transformation—befor

next-learn is a collection of educational resources and reference implementations for building full-stack web applications. It serves as a learning resource and tutorial for the Next.js framework, providing starter code and example projects that demonstrate server-side rendering and the React-based ecosystem. The project provides a full-stack web template that showcases a complete implementation of database integration, user authentication, and server-side logic. It includes reference examples for web performance optimization, specifically demonstrating the use of server components, server ac

Jotai is a state management library for React applications that utilizes an atomic model to handle data. It organizes application state into small, independent units called atoms, which automatically track dependencies and trigger granular updates to components. By building state through these composable primitives, the library ensures that only the necessary parts of an application re-render when data changes. The library distinguishes itself through its flexible approach to state composition and asynchronous data handling. It integrates promises directly into the state model, allowing devel

Redux is a predictable state container designed to manage global application data through a centralized store. It operates on a unidirectional data flow architecture where state transitions are triggered by dispatching action objects, which are then processed by pure reducer functions to produce a new, immutable state tree. This approach ensures that application data remains consistent and traceable across the entire component hierarchy. The library distinguishes itself through a functional pattern that relies on pure functions for state logic and a middleware-based extension system. This mid

XState is a statechart logic library and finite state machine framework used to model complex application behavior. It provides a system for defining states, events, and transitions to govern how a system responds to inputs through a formal schema. The project includes a visual state machine editor that allows for the design of state machine diagrams which automatically generate the corresponding logic and code. It implements an actor model to manage independent concurrent entities that communicate via asynchronous events to coordinate behavioral flows. The framework covers event-driven stat

Axios is an isomorphic, promise-based HTTP client designed for making asynchronous network requests across different JavaScript execution environments, including the browser and Node.js. It functions as a JSON API client that serializes JavaScript objects into JSON and parses server responses into structured data. The project features a system for managing reusable client instances with shared configurations, such as base URLs and default settings. It includes a mechanism for intercepting outgoing requests and incoming responses globally, allowing data to be transformed before it reaches the

Zustand is a state management library that provides a centralized store for managing shared application data. It functions as a reactive container that connects application state to components, allowing them to subscribe to specific slices of data and trigger updates automatically. By utilizing selector-based data access and immutable state updates, the library ensures that components only re-render when their observed data changes, maintaining a predictable and efficient data flow. The library distinguishes itself through a pluggable, middleware-based architecture that allows for the extensi

MobX is a reactive state management library and fine-grained reactivity engine. It provides an observable data store that automatically triggers updates in the user interface when data structures change, functioning as a transparent functional reactive store to maintain a consistent source of truth. The system utilizes a dependency-graph mapping and proxy-based object observation to track data dependencies. This ensures that only the specific components dependent on changed data are updated, which reduces unnecessary re-renders and optimizes frontend performance. The library supports decoupl

Vendure is a Node.js e-commerce engine and headless commerce framework built with NestJS and TypeScript. It serves as a multi-channel commerce platform that manages product catalogs, orders, and customers via a strongly typed GraphQL API. The platform is distinguished by its highly extensible architecture, featuring a customizable administrative dashboard where developers can inject custom React components and entity views. It supports multi-channel commerce, allowing the isolation of products, currencies, and regional catalogs from a single unified backend. The engine covers a broad range o

Redux-thunk is a middleware for Redux that enables action creators to return functions instead of plain objects. It serves as an asynchronous state management tool and functional action dispatcher that coordinates complex workflows and delays state updates until asynchronous tasks are complete. This middleware grants action creators access to the store state and dispatch methods, allowing for the execution of conditional logic and the coordination of multiple asynchronous operations. It enables the injection of custom dependencies and service layers to decouple business logic from the core st

This project is a cross-platform mobile project template and TypeScript boilerplate designed for bootstrapping React Native applications using the Expo ecosystem. It provides a pre-configured architecture with a standardized folder structure to accelerate initial development. The template distinguishes itself through a feature-based project architecture and a comprehensive automation suite. It integrates file-based routing for navigation, a utility-first mobile UI kit for styling, and a server state management layer for fetching and caching remote API data. The setup includes a mobile CI/CD p

TanStack Router is a type-safe routing library for web applications that provides full type safety for paths, search parameters, and data loaders across the entire application stack. It functions as a comprehensive framework for server-side rendering, enabling the generation of complete HTML pages to improve initial load performance and search engine optimization. By integrating declarative data fetching, the library manages asynchronous information at the route level, supporting preloading, caching, and parallel request execution to ensure data is ready before components render. The project

TanStack Table is a headless, framework-agnostic engine designed for building complex data grids and managing tabular state. By decoupling data processing logic from the visual rendering layer, it allows developers to implement custom user interfaces while offloading sophisticated operations like sorting, filtering, grouping, and pagination to a unified, performant core. The library distinguishes itself through its commitment to type safety and environment flexibility. It leverages strict type definitions to ensure data integrity across the entire application and utilizes an adapter pattern t