I was asked for RadEditor MVC helper, so here it goes (copy paste code out) :

        public static MvcHtmlString RadEditorFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression) where TModel : class
        {

            return RadEditorFor(htmlHelper, expression, ((IDictionary<string, object>)null));
        }

        public static MvcHtmlString RadEditorFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, object htmlAttributes) where TModel : class
        {
            return RadEditorFor(htmlHelper, expression, new RouteValueDictionary(htmlAttributes));
        }

        public static MvcHtmlString RadEditorFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, IDictionary<string, object> htmlAttributes) where TModel : class
        {
            string name = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText((LambdaExpression)expression));
            TProperty value = ExpressionHelper2.GetValue(htmlHelper, expression);
            return RadEditor(htmlHelper, name, value, htmlAttributes);
        }

        public static MvcHtmlString RadEditor(this HtmlHelper htmlHelper, string name)
        {
            return RadEditor(htmlHelper, name, null);
        }

        public static MvcHtmlString RadEditor(this HtmlHelper htmlHelper, string name, object value)
        {
            return RadEditor(htmlHelper, name, null, ((IDictionary<string, object>)null));
        }

        public static MvcHtmlString RadEditor(this HtmlHelper htmlHelper, string name, object value, object htmlAttributes)
        {
            return RadEditor(htmlHelper, name, value, new RouteValueDictionary(htmlAttributes));
        }

        public static MvcHtmlString RadEditor(this HtmlHelper htmlHelper, string name, object value, IDictionary<string, object> htmlAttributes)
        {
            if (String.IsNullOrEmpty(name))
            {
                name = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
                if (string.IsNullOrEmpty(name))
                {
                    throw new ArgumentException("name");
                }
            }
            if (htmlAttributes == null) htmlAttributes = new Dictionary<string, object>();
            Page page = new Page();
            RadMvcScriptManager mvcScriptManager = new RadMvcScriptManager();
            mvcScriptManager.EnableViewState = false;
            page.Controls.Add(mvcScriptManager);
            RadStyleSheetManager radStyleSheetManager = new RadStyleSheetManager();
            page.Controls.Add(radStyleSheetManager);

            //string id = name.Replace(".", "_");
            RadEditor radEditor = new RadEditor();

            radEditor.ID = name + "_radeditor";
            radEditor.ClientIDMode = ClientIDMode.Static;

            radEditor.ImageManager.ContentProviderTypeName = typeof(AzureStorageFileBrowserContentProvider).AssemblyQualifiedName;
            radEditor.ImageManager.MaxUploadFileSize = 3000000;
            radEditor.ImageManager.ViewPaths = new string[] { "uploaded/images" };
            radEditor.ImageManager.UploadPaths = new string[] { "uploaded/images" };
            radEditor.ImageManager.DeletePaths = new string[] { "uploaded/images" };

            radEditor.DocumentManager.ContentProviderTypeName = typeof(AzureStorageFileBrowserContentProvider).AssemblyQualifiedName;
            radEditor.DocumentManager.MaxUploadFileSize = 20000000;
            radEditor.DocumentManager.ViewPaths = new string[] { "uploaded/documents" };
            radEditor.DocumentManager.UploadPaths = new string[] { "uploaded/documents" };
            radEditor.DocumentManager.DeletePaths = new string[] { "uploaded/documents" };

            radEditor.MediaManager.ContentProviderTypeName = typeof(AzureStorageFileBrowserContentProvider).AssemblyQualifiedName;
            radEditor.MediaManager.MaxUploadFileSize = 50000000;
            radEditor.MediaManager.ViewPaths = new string[] { "uploaded/media" };
            radEditor.MediaManager.UploadPaths = new string[] { "uploaded/media" };
            radEditor.MediaManager.DeletePaths = new string[] { "uploaded/media" };

            radEditor.FlashManager.ContentProviderTypeName = typeof(AzureStorageFileBrowserContentProvider).AssemblyQualifiedName;
            radEditor.FlashManager.MaxUploadFileSize = 50000000;
            radEditor.FlashManager.ViewPaths = new string[] { "uploaded/flash" };
            radEditor.FlashManager.UploadPaths = new string[] { "uploaded/flash" };
            radEditor.FlashManager.DeletePaths = new string[] { "uploaded/flash" };

            //radEditor.TemplateManager.ContentProviderTypeName = typeof(AzureStorageFileBrowserContentProvider).AssemblyQualifiedName;
            radEditor.TemplateManager.MaxUploadFileSize = 500000;
            radEditor.TemplateManager.ViewPaths = new string[] { "~/content/templates" };

            radEditor.NewLineBr = false;

            radEditor.Skin = "Vista";

            //radEditor.ToolsFile = "~/Content/administracija/EditorToolbar.xml";
            if (htmlAttributes.ContainsKey("ToolsFile")) radEditor.ToolsFile = htmlAttributes["ToolsFile"] as string;
            UIHintControlParameterDataAnnotationsModelMetadata mmd = (UIHintControlParameterDataAnnotationsModelMetadata)htmlHelper.ViewData.ModelMetadata;
            if (mmd.TemplateControlParameterExist("ToolBar"))
            {
                radEditor.ToolsFile = mmd.GetTemplateControlParameter<string>("ToolBar");
            }
            if (mmd.TemplateControlParameterExist("DisableHtmlFormating") && mmd.GetTemplateControlParameter<bool>("DisableHtmlFormating"))
            {
                radEditor.StripFormattingOptions = EditorStripFormattingOptions.None;
                radEditor.DisableFilter(Telerik.Web.UI.EditorFilters.ConvertToXhtml);

            }
            if (value != null) radEditor.Content = value as string;
            radEditor.DialogHandlerUrl = "/Telerik.Web.UI.DialogHandler.axd";
            page.Controls.Add(radEditor);
            StringWriter output = new StringWriter();
            HttpContext.Current.Server.Execute(page, output, false);

            return MvcHtmlString.Create(htmlHelper.Hidden("", "ToBeReplaced").ToString() + output.ToString());
        }