The best CSS Framework alternative to Kendo UI is Semantic UI, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Kendo UI and five of them are CSS Frameworks so hopefully you can find a suitable replacement. Other interesting CSS Framework alternatives to Kendo UI are Material UI, GroundworkCSS, Kube Web Framework and FlyonUI.
UI framework with 50+ elements and 3000+ CSS variables, ensuring responsive design. Seamlessly integrates with React, Angular, and other frameworks for customizable theming.
No data grid - this is a big diff
Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.
GroundworkCSS is a 100% free and open source responsive HTML5, CSS and JavaScript Framework.
FlyonUI is designed to combine the best of both worlds: the aesthetic appeal of semantic classes and the powerful functionality of JS plugins.
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It is a complete web UI framework. It has a lot more widgets than Bootstrap and almost as many as Kendo UI. It is easy to use, feels lightweight and it has a nice default theme.