Telerik UI for ASP.NET AJAX is a library of over 120 user interface components designed for developers building Web Forms applications on the ASP.NET AJAX framework. It provides a variety of pre-built and high-performant controls which are fully customizable, ranging from data management to layout, navigation and data visualization. This feature-rich suite allows for the creation of responsive and visually appealing web applications, whilst enabling developers to enhance the user experience and expedite the development process.
The Telerik UI for ASP.NET AJAX 2025 Q3 update introduces a new One-Time Password (OTP) Input control that enhances application security by improving the integration of multi-factor authentication. This control provides a dedicated interface for handling one-time password entries, ensuring a consistent and reliable verification process across applications. It is fully customizable in terms of size, style, and format, allowing alignment with existing application designs while maintaining strong protection against unauthorized access. This addition simplifies implementation for developers and supports secure workflows such as logins, password resets, and sensitive transactions.
To see a full list of what's new in 2025 Q3 (2025.3.812), see our release notes.
Telerik UI for ASP.NET AJAX is licensed per developer and has two licensing models: an annual Subscription License and a Perpetual License. The Subscription license provides access to the latest product updates, technical support, and exclusive benefits for a flat annual fee, and must be renewed to continue using the software. The Perpetual license is a one-time purchase granting access to the current released version and includes a one-year subscription for product updates and technical support. After this initial period, users can choose to renew the subscription element to continue receiving updates and support; otherwise, they may continue using the installed version available during their active subscription term but will forgo future updates and support. See our Telerik UI for ASP.NET AJAX licensing page for full details.
Telerik UI for ASP.NET AJAX is available individually or as part of the following products:
