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See All Products Kendo UI Build JavaScript UI Javascript UI for Angular UI for Vue UI for jQuery KendoReact Telerik Build modern .NET business apps .Net Web UI for Blazor UI for ASP.NET Core UI for ASP.NET MVC UI for ASP.NET AJAX Cross-Platform UI for MAUI Desktop UI for WinForms UI for WPF UI for Win UI Reporting and Documents Reporting Report Server Document Processing Library AI for Developers & IT Ensure AI program success MCP Servers Agentic UI Generator Coding Assistants Fiddler MCP AI for UI AI-Ready Components AI Engineering Overview AI Observability Agent Cache Additional Tools Enhance the developer and designer experience Testing & Mocking Test Studio JustMock Debugging Fiddler Fiddler Everywhere Fiddler Classic Fiddler Everywhere Reporter FiddlerCore UI Tools ThemeBuilder Page Templates and Building Blocks CMS Sitefinity Free Tools KendoReact Free VB.NET to C# Converter Testing Framework See All Products Demos Blogs Docs & Support Pricing Shopping cart Your Account Account Overview Your Licenses Downloads Support Center Forum Profile Payment Methods Edit Profile Log out Login Contact Us Get A Free Trial close mobile menu Open Source @ Progress We develop experiences. We make UI frameworks and app development tools used by 2.1 million developers. We’ve also embraced open source technologies. Progress maintains and contributes much to open source software, understanding that all developers and the community benefit when we work together. Here's a taste of the many things open source that we do. Come adopt, work and collaborate with us! Kendo UI for jQuery UI for UWP Showcase Apps Kendo UI Core for jQuery Kendo UI® Core is the open source version of Kendo UI, the comprehensive framework for building modern web and mobile apps with HTML5 and JavaScript. Kendo UI Core is a feature-rich jQuery-based UI library for cutting-edge front-end development. This is why Kendo UI rocks: Responsive everywhere Kendo UI widgets are responsive to any size device screen. Beautiful pixel-perfect themes A dozen professional and easily customizable themes are built in. Easy styling Easily theme and style UI widgets with CSS. Cross browser Kendo UI widgets function exactly the same way in any browser. Plug & Play with web technologies Works with a variety of modern web development front end frameworks. Powerful data solutions Easy bindings and offline support. Choice of platform/IDE Work on Windows/Mac with your choice of IDE/Editor. Huge community Developer brand recognition and a large support community to fall back on. Kendo UI for jQuery Developer certification Get bragging rights by proving what you know. 40+ UI Components 1.5K Stars 21.4K followers Getting Started Guide Docs Interactive Dojos Demos GH Home UI for Universal Windows Platform Building UWP apps to target all Windows 10 devices from single code base? You'll want some polished performant UI controls in your arsenal. Grab Telerik UI for UWP—the entire product suite is now open source and completely free for you to use. Elevate your UWP apps—here's how: 20+ UI Components 12+ Chart Types 50% cut in development time Stop reinventing the wheel Complex rich UI controls for UWP apps. Consistent API canvas Target common and device family-specific APIs. Customize your way Control the style of UI controls through exposed APIs. Must-have essentials Ubiquitous controls like Grid, ListView and several Input controls. Data visualization done right Variety of Charts, Graphs and Gauges. Developer friendly Great documentation, demos and getting started experience. Unrivaled performance Native XAML implementations for maximum efficiency. Product Page Docs GH Home DevCraft Docs Kendo UI Core is feature-rich UI library for HTML and JavaScript front-end development - for modern web and mobile apps. Doc-Link Responsive everywhere Doc-link Plug & Play with web technologies Doc-link 3 Beautiful pixel-perfect Themes 40+ UI Components Responsive everywhere Doc-Link Responsive everywhere Plug & Play with web technologies Beautiful pixel-perfect Themes 40+ UI Components Progress is a proud sponsor of the .NET Foundation, an independent organization created to foster innovation in the .NET ecosystem through open development and collaboration. Check Out These Beautiful Apps All built with OSS Progress developer tools. 105k+ 50k+ 17k+ 4k+ 14k+ Telerik and Kendo UI are part of Progress product portfolio. Progress is the leading provider of application development and digital experience technologies. Company Technology Awards Press Releases Media Coverage Careers Offices Company Technology Awards Press Releases Media Coverage Careers Offices Copyright © 2026 Progress Software Corporation and/or its subsidiaries or affiliates. All Rights Reserved. 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