on search for a good TI editor (not by the Performance Modeler!), i found one called "Vizier".
The video looks realy good.

https://www.youtube.com/watch?v=Jqr6WsOUiD8
But the web adreess www.viziersoftware.com is not present.

Do anyone know where you can get this cool editor?
by the way: i don't know why IBM ist not uptodata in this topic!!!
Robert.