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Progress ThemeBuilder by Telerik is a comprehensive visual design tool that accelerates user interface customization for Telerik and Kendo UI web components. ThemeBuilder enables you to style virtually every appearance-related property of the UI components, from top-level elements to the smallest of details, without requiring direct CSS manipulation. It integrates seamlessly with existing development workflows and allows developers to create, modify, and maintain consistent and visually appealing themes across applications. This tool significantly reduces the time and effort required for UI customization and makes it easy to align them with branding and design specifications.
The Progress ThemeBuilder 2025 Q2 update introduces AI-powered theme generation, allowing developers to produce fully cohesive design themes through natural language prompts. Instead of manually configuring color palettes, typography, and layout settings, developers can specify brand requirements or stylistic preferences in plain text, and the AI generates the corresponding theme assets, reducing development time and minimizing inconsistency across components. Generated themes integrate directly with existing ThemeBuilder workflows, ensuring immediate compatibility with styling APIs and design tokens. This enhancement streamlines the process of adopting new design styles, enabling teams to focus on functionality while maintaining a unified visual identity.
To see a full list of what's new in 2025 Q2, see our release notes.
Progress ThemeBuilder is licensed per user and is available as an annual license with a one year support subscription, which is available in three tiers: Lite, Priority or Ultimate. See our Progress ThemeBuilder licensing page for full details.
For more information, see our Progress ThemeBuilder product page.

Theming in UI suites involves managing an application’s look and feel by centralizing colors, fonts and spacing in one location so every button, form and page maintains a familiar, polished appearance. This approach ensures customers experience a consistent brand presence on web, mobile and desktop, enables instant rollout of style updates without searching through code and provides end users with convenient light, dark and high contrast modes. In practice, theming accelerates design releases, reduces repetitive work and fosters collaboration between design and engineering teams to deliver smooth, accessible, high performance interfaces .
Several ASP.NET Core UI suites offer theming controls including:
For an in-depth analysis of features and price, visit our ASP.NET Core UI suites comparison.

Actipro WPF Essentials is a robust suite of user interface controls designed specifically for Windows Presentation Foundation (WPF) applications. It includes a set of advanced components that enhance the standard WPF experience, focusing on both usability and visual appeal. The product provides developers with high-performance tools such as sophisticated docking windows, property grids, and enhanced controls like task panes and themes, making it easier to build rich, interactive desktop applications.
The Actipro WPF Essentials v25.1 update adds support for resizable user prompts, making it easier to implement adaptable dialog boxes. With just one configuration change, developers can now allow end users to adjust prompt sizes, improving usability and accessibility. This feature removes the need for custom resizing logic and ensures consistent behavior across different applications, supporting more responsive and user-friendly interfaces.
To see a full list of what's new in v25.1, see our release notes.
Actipro WPF Essentials is licensed per developer and is available as a Perpetual license with 1 year support and maintenance. See our Actipro WPF Essentials licensing page for full details.
Actipro WPF Essentials is available in the following products:

Actipro Bars for WPF is a UI component library that equips developers with the tools to build advanced ribbons, toolbars, and menus within their WPF applications. It offers an "Office-like" ribbon experience with customization options, supports MVVM design patterns, and includes a rich set of controls specifically designed for use within these elements, allowing for a cohesive and user-friendly interface.
The Actipro Bars for WPF v25.1 update introduces Visual Studio-style dockable toolbars that can be positioned on any edge of a host control or detached and moved to secondary monitors. This provides a highly adaptable workspace layout that users can configure to fit their preferences. Developers gain fine control over docking behavior, floating, stacking, and visibility settings through exposed properties, allowing for a dynamic and customizable interface without requiring complex custom coding.
To see a full list of what's new in v25.1, see our release notes.
Actipro Bars for WPF is licensed per developer and is available as a Perpetual license with 1 year support and maintenance. See our Actipro Bars for WPF licensing page for full details.
Actipro Bars for WPF is available in the following products:

A toolbar user interface component is a horizontal or vertical strip that contains a set of buttons, icons, dropdowns or menus designed to provide quick access to commonly used functions within a software application. These customizable toolbars streamline user interactions by grouping related tools in a consistent and easily accessible location, often near the top or side of the interface. Toolbars enhance productivity by minimizing the number of steps required to perform frequent tasks, improving efficiency, and reducing the need to navigate through deeper menu hierarchies. Such a component also contributes to a cleaner and more organized interface, helping users perform actions more intuitively and with fewer interruptions.
Several WPF user interface suites provide you with toolbars, including:
For an in-depth analysis of features and price, visit our comparison of WPF user interface suites.