Delphi: Alternative to JEDI Desktop Alert (balloon) - delphi

Question

Is there a good analogue/equivalent to JEDI Desktop Alert (a kind of a balloon in the right bottom corner of a desktop)?
Balloon hint cannot be showed like a stack (a new hint is on the top of others), but JEDI Desktop Alert can do it.
May be some one knows, why does a show event of that component fire twice instead of once? :)
Thank your for suggestions!

Answer 1

This might be a bit late, but below is a basic example of showing 5 stacked alert windows on top of each other in bottom right corner, using Jedi Desktop Alert.
unit Unit1;
interface
uses
Winapi.Windows,
Winapi.Messages,
System.SysUtils,
System.Variants,
System.Classes,
Vcl.Graphics,
Vcl.Controls,
Vcl.Forms,
Vcl.Dialogs,
Vcl.StdCtrls,
JvDesktopAlert;
type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
procedure AddAlert(title, text: String; stack: TjvDesktopAlertStack);
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.AddAlert(title, text: String; stack: TjvDesktopAlertStack);
Begin
with TJvDesktopAlert.Create(self) do
Begin
AutoFree := true;
AlertStack := stack;
HeaderText := title;
MessageText := text;
Execute(self.Handle);
End;
End;
procedure TForm1.Button1Click(Sender: TObject);
var
stack: TjvDesktopAlertStack;
begin
stack := TJvDesktopAlertStack.Create(self);
try
AddAlert('title1', 'message1', stack);
AddAlert('title2', 'message2', stack);
AddAlert('title3', 'message3', stack);
AddAlert('title4', 'message4', stack);
AddAlert('title5', 'message5', stack);
finally
stack.Free;
end;
end;
end.

Answer 2

TMS Software has TAdvAlertWindow, an "Outlook 2003, 2007 style alert window".
It's a commercial component, available separately or as part of the TMS Component Pack.
Update: The above image was taken from TMS website. As Andreas has pointed the font is not antialiased (it's a bitmapped font, probably MS Sans Serif). I've tested the trial version of the component and setting the font to Tahoma works as expected: