Keep it fast, simple and free. ASPajax is the definitive Ajax framework for Classic ASP (VBScript) websites. All you need is a W3C compliant ASP website and a few lines of code.
If you're looking for an easy to use yet extremely powerful Ajax chat solution, then ASP.NET Ajax Chat may be just what you're looking for. The software is simple to install, fast and customizable. It uses AJAX to smoothly refresh (no flicker).
Ajax-Controls.NET component is designed to provide developers with an easy-to-use tool to AJAX enable standard ASP.NET controls and 3rd party controls in ASP.NET application, which allow you to update page content without postback and loss of scroll
KCallback.net Control, the most powerful, robust, callback control available in the market today for ASP.NET with AJAX support. Written in 100% managed C# code, KCallback.net provide callback functionality in your web applications.
Ajax Uploader is an easy to use, hi-performance ASP.NET upload component which allows you to upload files to web server without refreshing the page. It supports ASP.NET AJAX frameworks and works in ajax updatepanel.
ARI is a free .NET Ajax programming library that removes all the complexity associated with developing Ajax enabled web sites. ARI allows you to execute methods in the App_Code directory of your ASP.NET web site using an extremely simple call syntax.
There is no need to know javascript, css, html coding, no image editing, just a click to get your gallery ready. Just drag&drop your photos into photo album software window, select the style of thumbnails and the overlay window and add it.
FlyTreeView for ASP.NET is an advanced tree component. FlyTreeView for ASP.NET features ASP.NET AJAX compatibility, context menu, drag-and-drop capabilities, on-demand nodes population, radio buttons and checkboxes, and more.
Virto Ajax Mini Calendar is intended to show all the events from different data sources in one small single calendar. Easily connected to Virto Calendar.