Open-source alternatives to Concent

tansu is a lightweight, push-based framework-agnostic state management library. It borrows the ideas and APIs originally designed and implemented by Svelte stores and extends them with computed and batch.

Powerfully simple global state management for Vue 3

A library to bring hypermedia json into the NgRx Signal Store following the HATEOAS approach

Various Extensions for the NgRx Signal Store

A simple, lightweight mediator library for Angular.

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

Core Data with ReactiveCocoa

The simple but very powerful and incredibly fast state management for React that is based on hooks

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

Functional Web Components

State-first Angular state management — 12x lighter than NgRx, async/await, built-in DevTools, zero RxJS required

Lightweight observations and bindings in Swift

Open source implementation of Apple's Combine framework for processing values over time.

Simple syncing between @ngrx store and local storage

Flexible, stream-based abstraction for launching processes

The Pinia plugin to enable Object-Relational Mapping access to the Pinia Store.

Minimalistic Query-like library for Angular. RxJS only. DI native. SSR-friendly.

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

Ultra-high performance reactive programming

General purpose utils & apis for interacting with vert.x

NOT MAINTAINED Simple global state for React with Hooks API without Context API

A simple way to create signal stores with a read-only interface.