Every .NET team eventually hits the same wall: the built-in controls cover buttons and text boxes, but the product needs a data grid that handles 100,000 rows, a scheduler, a docking layout, charts and a theme that looks current. Buying them locks you into a vendor’s release cadence, licensing and design language for years.
The market shifted noticeably in 2026. .NET 10 is now the long-term support baseline, Avalonia 12 shipped and retired its Accelerate brand, Microsoft released version 5 of Fluent UI Blazor, and nearly every commercial vendor added AI chat components and MCP servers that feed their documentation to coding assistants. If your team is weighing a library alongside outside help, our list of top .NET development companies covers the partners who work with these suites every day.
Here are 10 .NET UI component libraries worth evaluating in 2027, ranked on framework coverage, depth of the core controls, licensing value and how well each vendor keeps pace with new .NET releases.
.NET UI Component Libraries At A Glance
Tool
Best For
Frameworks
Pricing Model
DevExpress
Large line-of-business desktop and web apps
WinForms, WPF, Blazor, ASP.NET Core, MVC, Web Forms, .NET MAUI
Per-developer annual subscription
Progress Telerik DevCraft
Teams spanning .NET and JavaScript front ends
Blazor, ASP.NET Core, MVC, AJAX, WPF, WinForms, WinUI, .NET MAUI
Per-developer annual subscription, three tiers
Syncfusion Essential Studio
Startups and small ISVs needing breadth
Blazor, ASP.NET Core, MVC, WinForms, WPF, UWP, WinUI, .NET MAUI
Annual subscription; free community license for eligible companies
Infragistics Ultimate
Data-heavy Blazor dashboards
Blazor, ASP.NET Core, MVC, Web Forms, WPF, WinForms
Per-developer annual subscription; 50+ Blazor controls under MIT
MESCIUS ComponentOne
Grid-centric apps on several platforms
WinForms, WPF, WinUI, .NET MAUI, Blazor, ASP.NET Core, MVC
Per-developer annual subscription, suite or per-platform edition
Avalonia UI
Cross-platform desktop and WPF migration
Avalonia (Windows, macOS, Linux, mobile, browser); XPF for WPF apps
MIT core; per-seat Plus and Pro; perpetual per-app XPF
MudBlazor
Free Material Design Blazor apps
Blazor
Free, MIT
Uno Platform
WinUI skills shipped to web and mobile
Uno Platform (WinUI API on Windows, iOS, Android, WebAssembly, macOS, Linux)
Apache 2.0 core; optional monthly Studio plans
Radzen Blazor Components
Budget Blazor teams that want scaffolding
Blazor
Free, MIT; optional Pro and Team subscriptions
Microsoft Fluent UI Blazor
Blazor apps that should match Microsoft 365 styling
Blazor
Free, MIT
Best .NET UI Component Libraries In 2027
1. DevExpress — 600+ Controls Across WinForms, WPF, Blazor, ASP.NET Core And MAUI
DevExpress is the most complete option for teams that run large line-of-business applications on more than one .NET surface. The Universal subscription bundles over 600 UI controls, with 190+ for WinForms, 130+ for WPF, 70+ Blazor components, 85+ ASP.NET Core controls and a .NET MAUI suite, plus reporting, dashboards, the XAF application framework and the Office and PDF File API.
Version 26.1 brought real changes rather than polish. Blazor components dropped Bootstrap v4 in favor of v5, gained a preview icon library with more than 13,000 icons and cut Ribbon memory use by up to about 26% in DevExpress testing. The AI Chat control moved to a new response provider model that connects to agents, workflows and OpenAI or Azure AI endpoints. WPF picked up a Fluent Light theme preview and “Prompt to Expression” for grid filtering, and the WinForms Spreadsheet added XLOOKUP, FILTER, SORT and UNIQUE. Version 26.2 is previewed for December 2026.
The trade-off is cost and churn. Universal lists at $2,299.99 per developer for the first year and $1,149.99 for on-time renewal, and the 26.1 AI Chat migration includes breaking changes that need the DevExpress Project Converter. The Blazor catalog is also smaller than the desktop suites, so teams going Blazor-first should check that every control they need exists there.
Best for: Enterprise teams maintaining WinForms or WPF applications while building new web modules in Blazor or ASP.NET Core.
Telerik DevCraft bundles Telerik UI for Blazor, ASP.NET Core, ASP.NET MVC, ASP.NET AJAX, WPF, WinForms, WinUI and .NET MAUI with the Kendo UI JavaScript libraries and KendoReact. Every tier includes the same 1,300+ components.
Telerik UI for Blazor alone lists 120+ components with .NET 9 and .NET 10 support. Recent additions include DropDownTree, TaskBoard, Segmented Control and Expansion Panel, along with AI-focused components such as PromptBox, SmartPasteButton and an LLM Kit. DevCraft now includes MCP servers that give coding assistants Telerik context and can generate and style full pages from a prompt. October 2026 brought UI for Blazor 15.1.0 and the 2026.3 desktop releases.
DevCraft is subscription only, priced per developer per year: $1,149 for DevCraft UI, $1,299 for Complete and $1,649 for Ultimate. The entry tier carries Lite support with a 72-hour response target and ten incidents, while embedded reporting and the JustMock mocking tool start at Complete.
Best for: Organizations that build in both .NET and JavaScript and want one vendor, one license and one support desk for every front end.
Syncfusion Essential Studio offers the widest catalog on this list, with more than 1,600 controls and frameworks across Blazor, ASP.NET Core, ASP.NET MVC, WinForms, WPF, UWP, WinUI and .NET MAUI, plus JavaScript frameworks and document processing libraries. Its community license is free for companies and individuals with under $1 million in annual gross revenue, five or fewer developers and ten or fewer employees, provided they have never taken more than $3 million in outside capital. Government-funded organizations are excluded.
Essential Studio 2026 Volume 3 shows how fast the catalog moves. Blazor gained a Sunburst Chart and AI AssistView updates. The .NET MAUI controls gained five additions: Data Pager, Diagram, Grid Splitter, Interactive Viewer and Tree Grid. WinUI received a Docking Manager, and the WPF DataGrid now filters across multiple columns through a filter editor. Teams that also generate documents can use the same license for the file libraries covered in our .NET PDF and document processing libraries list.
Breadth comes with uneven depth: some platform ports, particularly the newer MAUI and WinUI sets, trail the Blazor and WPF versions in features. Growing past the community thresholds means moving to a paid subscription, so budget for it early.
Best for: Startups and small software vendors that need wide component coverage and qualify for the free community license.
Infragistics Ultimate combines Ignite UI for Blazor, Angular, React and Web Components with Ultimate UI for WPF and Windows Forms, ASP.NET Core, MVC and Web Forms libraries, and App Builder, a cloud tool that generates working code from a visual design.
Ignite UI for Blazor includes 90+ native controls and supports .NET 8, .NET 9 and .NET 10. More than 50 of those components, including a free Grid Lite, are now published under the MIT license, which lowers the cost of trying the grid in production. Infragistics says its grid renders, scrolls, sorts and edits 100,000+ rows at a steady 60 FPS; treat that as a vendor claim and benchmark it with your data. App Builder can now generate applications from natural language and uploaded images.
Platform coverage is the gap. WinUI and .NET MAUI are listed as coming soon, so mobile and modern Windows apps need another library today. Ultimate costs $2,399 per developer for one year, with Ignite UI alone at $1,399 and Infragistics Professional at $1,599.
Best for: Data-heavy Blazor and WPF applications, especially in teams that also use Angular or React.
ComponentOne, sold by MESCIUS (formerly GrapeCity), provides 400+ UI controls for WinForms, WPF, WinUI, .NET MAUI, Blazor, ASP.NET Core and ASP.NET MVC. Its anchor is FlexGrid, which runs on every supported .NET platform, so a team can carry one grid API from a desktop app to a Blazor portal.
ComponentOne 2026 v1 added .NET 10 and Visual Studio 2026 support, a FlexDiagram beta for WPF, WinUI and .NET MAUI and masked input and custom editors for the Blazor FlexGrid. Pricing is clear: Studio Enterprise costs $1,299 per developer per year, and single-platform editions run $699 to $799. Published apps carry no royalties and keep working after a subscription ends.
ComponentOne has a smaller community and fewer third-party tutorials than DevExpress or Telerik, so answers come mostly from vendor support. UWP and Xamarin are no longer supported, and each serial number activates on up to two machines.
Best for: Grid-centric business apps that need the same data grid behavior across desktop, mobile and web.
6. Avalonia UI — MIT Framework With 70+ Controls, Pro Add-Ons And XPF For WPF Apps
Avalonia is a cross-platform XAML framework with 70+ built-in controls under the MIT license, running on Windows, macOS, Linux, mobile and the browser. It is the main choice for teams that want WPF-style development without being tied to Windows, and its sister product, Avalonia XPF, runs existing WPF applications on macOS and Linux with what the vendor describes as a single SDK reference change.
Avalonia 12, released April 7, 2026, targets .NET 10, enables compiled bindings by default and reports Android startup dropping from 1,960 ms to 460 ms with NativeAOT. The release retired the Accelerate brand and open-sourced the WebView control. Commercial add-ons now sit in Plus (€299 per seat per year, with DevTools and Hot Reload) and Pro (€899, adding TreeDataGrid, Media Player, Rich Text Editor, PDF Viewer, Markdown Viewer and 70+ charts), with Enterprise from €21,000 per year. XPF uses perpetual per-application licenses from €9,500 for internal apps and supports major vendors’ WPF controls, including DevExpress, Telerik and Actipro.
Avalonia is a framework first, so its free control set is thinner than a commercial suite, and many advanced controls require Pro. Avalonia 12 also removed netstandard2.0 targets from almost all projects, which forces older libraries to update. Avalonia also says XPF compatibility is not guaranteed for every WPF component.
Best for: Desktop software that must ship on Windows, macOS and Linux, and WPF products that need a route off Windows.
7. MudBlazor — MIT Material Design Components For Blazor On .NET 8 To 10
MudBlazor is the most widely adopted open source Blazor component library, with more than 40 million NuGet downloads. It follows Google’s Material Design system.
The v9 line has been busy in 2026. Version 9.8 added inline row editing to MudDataGrid and 9.9 added cell click events. Version 9.11.0, released September 27, 2026, added regex mask presets and focused on performance, with the maintainers reporting that the median component renders 31% less than in 9.8. Packages target .NET 8, .NET 9 and .NET 10.
MudBlazor ships behavior changes inside minor releases: 9.8 made mini drawers temporary on mobile, 9.9 changed OnBlur for read-only inputs, and 9.7 deprecated Validate in favor of ValidateAsync. Pin versions and read release notes before upgrading. Support is community only, and the core library focuses on general-purpose controls, so teams that need a scheduler, Gantt chart or pivot grid usually add a separate package.
Best for: Blazor teams that want a free, actively maintained Material Design library with a capable data grid.
8. Uno Platform — Open Source WinUI API Across Web, Mobile And Desktop With Uno Toolkit
Uno Platform implements the WinUI 3 API so that one XAML or C# Markup codebase runs on Windows, iOS, Android, WebAssembly, macOS and Linux. The core, including Uno Toolkit, Uno Themes, Uno.Extensions and Hot Reload, is free under Apache 2.0. Uno Toolkit adds the higher-level controls WinUI lacks, such as TabBar, NavigationBar, AutoLayout, Drawer and ShadowContainer.
Uno Platform 6.0, released in May 2025, introduced a unified Skia rendering engine across every target and vendor-reported gains of up to 60% faster startup. The Uno.Sdk reached 6.7.30 in September 2026, and Uno Platform Studio 3.2 followed in October with new tooling for Hot Design, the runtime visual designer. Studio Pro costs $39 per developer per month and Business $119, while Community stays free with Hot Reload, Toolkit and the Uno MCP server.
Uno is a platform rather than a component suite, so complex grids, charts and schedulers come from third-party vendors, and you should confirm that the ones you need support Uno targets.
Best for: Teams with WinUI skills that want one codebase across Windows, browser and mobile.
Radzen Blazor Components is a free library of 155+ open source Blazor components under the MIT license, including a data grid, scheduler, charts, HTML editor and form controls. It is backed by a commercial company that also sells Radzen Blazor Studio, a visual designer and scaffolding tool.
Ten themes are free, including Material, Standard, Humanistic and Software with dark variants. The Pro subscription, at $799 per developer per year, unlocks eight premium themes such as Material 3 and Fluent, theme customization, UI blocks, app templates and email support with a 24-hour response target. Team costs $1,999 per year for three seats and adds priority fixes.
The free tier limits Studio, the Visual Studio extension and the MCP server to 15-day trials, and Studio premium features switch off when a paid subscription ends. Components are less polished than DevExpress or Telerik in edge cases, and community forum support has no guaranteed response time.
Best for: Budget-conscious Blazor teams that want a free grid and scheduler with optional paid scaffolding.
Fluent UI Blazor is an MIT-licensed component library built and maintained by Microsoft employees and outside contributors. It wraps and extends the Fluent UI Web Components, so Blazor apps match the look of Microsoft 365 and other Microsoft products.
Version 5.0.0 reached NuGet in late September 2026, followed by 5.0.1 on October 14, 2026, with packages targeting .NET 8, .NET 9, .NET 10 and .NET 11. The v5 release adds layout components such as FluentLayout, FluentGrid and FluentStack, new inputs including FluentSlider and FluentSwitch, and services for dialogs, drawers and localization.
Moving from v4 to v5 involves API changes, so existing apps need migration time. The library centers on layout, forms, navigation, dialogs and the FluentDataGrid, which means charting and scheduling usually come from another source. Support is through GitHub issues rather than a paid service agreement.
Best for: Blazor apps that need free, Microsoft-styled components and can source charts elsewhere.
How To Choose The Right .NET UI Component Library
Which Frameworks Must You Cover Now And In Three Years?
List every UI surface you ship today and every one on the roadmap. A team with WinForms, WPF and a Blazor portal benefits from a multi-platform suite such as DevExpress, Telerik or Syncfusion. A Blazor-only team can often get by with MudBlazor, Radzen or Fluent UI Blazor. If macOS or Linux is on the roadmap, Avalonia or Uno Platform belongs on the shortlist, and so does checking whether your preferred vendor’s controls run there.
Do You Want A Subscription, A Perpetual License Or Open Source?
Telerik, DevExpress, Infragistics and ComponentOne sell annual per-developer subscriptions. Avalonia XPF sells perpetual licenses with paid updates. MudBlazor, Radzen, Fluent UI Blazor, Avalonia core and Uno core are free under MIT or Apache 2.0. Price the full team over three years, including renewals, and confirm what happens to your shipped apps and your build pipeline if a subscription lapses.
How Deep Is The Data Grid?
The grid is usually the control that decides the purchase. Test virtualization with your real row counts, grouping, inline editing, Excel export, column pinning and keyboard navigation. If you also need printable output, check whether the same vendor offers one of the top .NET reporting tools, since a matching report designer saves integration work.
Will The Vendor Keep Pace With .NET Releases?
Look at how quickly each library supported .NET 10 and whether it already targets .NET 11 previews, as Fluent UI Blazor does. Check release history for the last 12 months, the frequency of breaking changes and the migration tooling offered.
What Support Do You Get When Something Breaks?
Commercial tiers differ sharply on response times and incident limits, so read the support terms of the tier you plan to buy, not the top tier. Open source libraries depend on GitHub issues and community goodwill.
Conclusion
For broad, multi-platform coverage, DevExpress, Telerik and Syncfusion remain the strongest choices, with Syncfusion’s community license making it the easiest start for small companies. Infragistics and ComponentOne win on grid-driven work, Avalonia and Uno Platform lead for cross-platform desktop and WinUI reach, and MudBlazor, Radzen and Fluent UI Blazor give Blazor teams capable free options.
Shortlist two or three libraries, build the same demanding screen in each during the trial and compare the code, performance and support response. For the rest of your toolchain, see our guide to the best .NET developer tools.
