List of Free code AutoComplete

ASP.net MVC Awesome - jQuery Ajax Helpers
It contains a rich set of helpers (controls) that you can use to build highly responsive and interactive Ajax-enabled Web applications. These helpers include Autocomplete, AjaxDropdown, Lookup, MultiLookup, AjaxForm, AjaxRadioList, AjaxCheckBoxList, DatePicker, Confirm Dialog,...
Auto Complete Control for ASP.NET
Autocomplete Control is a fully functional ASP.NET control for word suggestions and autocomplete. We had been using Ajax Control Toolkit AutoComplete Extender in our projects before, but we have needed some extra features and functionalities.
AutoComplete.Net (for Asp.Net and Asp.Net MVC)
AutoComplete.Net is a wrapper around the JQuery UI Autocomplete widget. It makes it easier to add autocomplete functionalities without having to bother with tons of javascript. Includes a WebControl for your Asp.Net web applications and a bunch of extension methods for your ...
ConvincingMail Advanced Auto Complete / Auto Suggest ControlExtender
ConvincingMail AutoComplete is an ASP.NET AJAX control extender that can be attached to any TextBox control, and will associate that control with a popup list to display items that returend by the webservice for the prefix typed into the textbox.