Best Carbon Design System Alternatives & Competitors in 2025

The official front-end framework for building experiences that fit seamlessly into Microsoft 365.

A CSS Framework and a Set of React Components that Implement Google's Material Design

Open Source free

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.

Try for free Open Source freemium

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

Open Source

Simple and flexible HTML, CSS, and JS for popular UI components and interactions

Open Source

An enterprise-class UI design language and React implementation with a set of high-quality React components, one of best React UI library for enterprises

Open Source

Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!

Simple, modular and accessible UI components for your React applications.

Open Source

An in-browser IDE for exploring GraphQL

Magidoc is a free open source software that can generate beautiful static GraphQL documentation websites for any API.

Online Tools like Beautifiers, Editors, Viewers, Minifier, Validators, Converters for Developers: XML, JSON, CSS, JavaScript, Java, C#, MXML, SQL, CSV, Excel

Online VS Code Editor for Angular and React

Open Source

Super sleek javascript playground with instant live preview and console. Start code within seconds. No “npm run start” or anything.

freemium $9.0 / Monthly

Find the performance impact of adding a npm package to your bundle.