This diagramming tool can provide a toolbox with different models that can be dragged onto the canvas, edited, resized, rotated, etc.
Additionally a hierarchical model can be implemented that link different models on the diagram.

On iOS 8 Safari the propagation of the "touch" event is not prevented, thus the element beneath the touched DropDownList item get touched as well.

Executing a cut command when Track Changes are enabled in RadEditor results in unexpected rearrangement of the content.

It was bug in the Firefox, and now works as expected. Here is markup for testing:
<script runat="server">  
    protected void RadTextBox1_TextChanged(object sender, EventArgs e)
    {
        newText.Text = RadTextBox1.Text;
    }  
</script>
<asp:Label runat="server" ID="newText"></asp:Label>
<telerik:RadTextBox runat="server" ID="RadTextBox1" AutoPostBack="true" OnTextChanged="RadTextBox1_TextChanged"></telerik:RadTextBox>
<asp:Button Text="submit" runat="server" />