Best JS Library Products in 2025

A JavaScript library for building user interfaces.

Key React features:

Component-Based Architecture Virtual DOM Strong Community and Ecosystem JSX Syntax

Open Source

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Key Flagsmith features:

Feature Flags Remote Config A/B/X Testing & Optimization Organization Management

Try for free Open Source freemium

Reactive Components for Modern Web Interfaces.

Key Vue.js features:

Easy to Learn Reactive Data Binding Component-Based Architecture Rich Ecosystem and Integration

Open Source

Cybernetically enhanced web apps.

Key Svelte features:

Performance File Size Simplicity Reactivity

Open Source

Angular is a JavaScript web framework for creating single-page web applications. The code is free to use and available as open source. It is further maintained and heavily used by Google and by lots of other developers around the world.

Key Angular.io features:

Two-Way Data Binding Dependency Injection Comprehensive Documentation Component-Based Architecture

AngularJS lets you extend HTML vocabulary for your application. The resulting environment is extraordinarily expressive, readable, and quick to develop.

Key AngularJS features:

Two-way data binding Dependency Injection Modular Development Community and Ecosystem

Predictable state container for JavaScript apps.

Key Redux.js features:

Predictable State Management Ecosystem and Community Time-Travel Debugging Middleware Support

Open Source

date-fns provides the most comprehensive yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.

Key date-fns features:

Lightweight Modular Immutable Comprehensive

Open Source

A JavaScript framework for creating ambitious web apps.

Key ember.js features:

Convention Over Configuration Robust CLI EMBER Data Strong Community and Ecosystem

Open Source

Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple.

Key ExpressJS features:

Fast Setup Middleware Support Extensibility Performance

Open Source

Parse, validate, manipulate, and display dates in JavaScript.

Key Moment.js features:

Comprehensive Functionality Locale Support Ease of Use Community and Documentation

Open Source

A utility-first CSS framework for rapidly building custom user interfaces.

Key Tailwind CSS features:

Utility-First Approach Customization Consistent Design Responsive Design

Open Source

Context provides a way to pass data through the component tree without having to pass props down manually at every level.

Key react-context features:

State Management Seamless Integration Component Decoupling Reusability

Give your JS App some Backbone with Models, Views, Collections, and Events.

Key Backbone.js features:

Lightweight Flexibility Ease of Integration Large Community

Open Source