SI

Best siimple Alternatives in 2026

Based on real usage data from 0 websites analyzed by StackSee

We analyzed real website data to find the most popular alternatives to siimple. siimple is siimple is a minimal CSS toolkit for building flat, clean and responsive web designs. See which tools teams actually use instead, backed by real-time detection data.

Top Alternatives to siimple

Technologies in the UI frameworks category that teams use instead of siimple, ranked by adoption.

1

CH

Chakra UI Chakra UI is a simple, modular and accessible component library that gives you the building blocks you need to build your React applications.

UI frameworks

2

CI

CivicTheme CivicTheme is an open source, inclusive and component-based design system. It was created so governments and corporations can rapidly assemble modern, consistent and compliant digital experiences.

UI frameworks

3

CL

Clarity Clarity is an open-source design system that brings together UX guidelines, an HTML/CSS framework, and Angular components.

UI frameworks

4

CO

CoreUI CoreUI provides cloud hosting, web and mobile design, animations, wireframes, and UX testing services.

UI frameworks

5

AN

Angular Material Angular Material is a UI component library for Angular JS developers. Angular Material components assist in constructing attractive, consistent, and functional web pages and web applications.

UI frameworks

6

AN

Animate.css Animate.css is a ready-to-use library collection of CSS3 animation effects.

UI frameworks

7

AN

Ant Design Ant Design is a UI library that can be used with data flow solutions and application frameworks in any React ecosystem.

UI frameworks

8

AR

Arco Design Vue Arco Design is a set of open-source UI Components for Vue, aiming to address experience issues in products.

UI frameworks

9

AU

Aura Aura is an open-source UI framework built by Salesforce for developing dynamic web apps for mobile and desktop devices.

UI frameworks

10

AU

Automatic.css Automatic.css is a CSS framework for WordPress page builders.

UI frameworksWordPress plugins

11

AU

augmented-ui augmented-ui is a UI framework inspired by cyberpunk and sci-fi.

UI frameworks

12

BO

Bootstrap Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.

UI frameworks

13

BU

Bulma Bulma is a free class-based framework for CSS.

UI frameworks

14

DE

DevExtreme DevExtreme is a collection of JavaScript UI components designed for Angular, React, Vue, and jQuery, developed by DevExpress.

UI frameworks

15

DE

Devup UI Devup UI is a tool for analyzing CSS-in-JS scenarios, delivering fast styling with optimal performance.

UI frameworks

16

DO

Dorik AI Dorik is an AI website-building platform that requires no design or coding experience.

UI frameworks

17

DA

daisyUI daisyUI is a customisable Tailwind CSS component library that prevents verbose markup in frontend applications. With a focus on customising and creating themes for user interfaces, daisyUI uses pure CSS and Tailwind utility classes, allowing developers to write clean HTML.

UI frameworks

18

EA

EasyUI EasyUI is a UI framework that provides a set of customizable components and widgets for building interactive web applications.

UI frameworks

19

EL

Element UI Element UI is an open-source component library specifically designed for Vue.js, offering a collection of pre-designed UI components such as buttons, forms, tables, and modals.

UI frameworks

20

FL

Flat UI

UI frameworks

21

FL

Flowbite Flowbite is an open-source library of UI components based on the utility-first Tailwind CSS framework featuring dark mode support, a Figma design system, and more.

UI frameworks

22

FL

Flutter Flutter is an open source framework by Google for building beautiful, natively compiled, multi-platform applications from a single codebase.

UI frameworks

23

FL

Flyvi Flyvi is a platform that generates visually engaging graphics optimized for social media.

UI frameworks

24

HE

Headless UI Headless UI is an unstyled component library for either React.js or Vue.js from the same people that created Tailwind CSS.

UI frameworks

25

HE

HeroUI HeroUI allows you to make beautiful, modern, and fast websites/applications regardless of your design experience, created with React.js and Stitches, based on React Aria and inspired by Vuesax.

UI frameworks

26

GO

GOV.UK Elements

UI frameworks

27

GO

GOV.UK Frontend

UI frameworks

28

GO

GOV.UK Template

UI frameworks

29

GO

GOV.UK Toolkit

UI frameworks

30

IB

IBM Carbon Design System IBM Carbon Design System is an open-source design system for building products and digital experiences.

UI frameworks

31

KE

Kendo UI Kendo UI is a HTML5 user interface framework for building interactive and high-performance websites and applications.

UI frameworks

32

KO

Kobalte Kobalte is a UI toolkit for building accessible web apps and design systems with SolidJS.

UI frameworks

33

LA

Layui Layui is an open-source modular front-end UI component library.

UI frameworks

34

PA

Panda CSS Panda is a styling engine that generates styling primitives to author atomic CSS and recipes in a type-safe and readable manner.

UI frameworks

35

PI

Pico CSS Pico CSS is a minimal CSS framework for semantic HTML, without using classes.

UI frameworks

36

PL

PlusProComponents PlusProComponents is a collection of page-level front-end components designed to streamline web development and enhance UI consistency.

UI frameworks

37

PR

Preline UI Preline UI is an open-source set of prebuilt UI components based on the utility-first Tailwind CSS framework.

UI frameworks

38

PR

PrimeNG PrimeNG is a rich set of open-source UI Components for Angular.

UI frameworks

39

PR

PrimeReact PrimeReact is a rich set of open-source UI Components for React.

UI frameworks

40

PR

PrimeVue PrimeVue is a rich set of open-source UI Components for Vue.js.

UI frameworks

41

PU

Pure CSS Pure CSS is a set of small, responsive CSS modules that can be used in web projects.

UI frameworks

42

NS

NSW Design System

UI frameworks

43

NA

Naive UI Naive UI is a Vue.js UI library written in TypeScript, offering more than 80 treeshakable components.

UI frameworks

44

NE

New UI New UI is a framework designed for developing user interfaces for SaaS applications and websites.

UI frameworks

45

NO

Normalize.css Normalize.css is a CSS library that makes browsers render elements according to modern standards by targeting only the styles that require normalization.

UI frameworks

46

NU

Nuxt UI Nuxt UI is a customizable UI library designed for Nuxt.

UI frameworks

47

MD

MDBootstrap MDBootstrap (Material Design for Bootstrap) is a complete UI package that can be integrated with other frameworks such as Angular, React, Vue, etc. It is used to design a fully responsive and mobile-friendly layout using various components, plugins, animation.

UI frameworks

48

MD

MDUI MDUI is a CSS Framework based on material design.

UI frameworks

49

MU

MUI MUI(formerly Material UI) is a simple and customisable component library to build faster, beautiful, and more accessible React applications.

UI frameworks

50

MA

Magic UI Magic UI is a UI library featuring open-source animated components built with React, TypeScript, Tailwind CSS, and Framer Motion.

UI frameworks