Cecilia is described as 'Graphic user interface for the sound synthesis software csound. It environment for music and signal-processing that uses Csound as its underlying audio processing engine. One can think of Cecilia as a completely programmable sound-processing tool, with' and is an app. There are 2 alternatives to Cecilia for Mac, Windows, Linux and Csound. The best Cecilia alternative is Cabel, which is both free and Open Source.
Cabel is a graphical user interface for building Csound instruments by patching modules similar to modular synthesizers. Cabel modules are defined in XML files, so anybody with some Csound knowledge can write his/her own modules and play with them.
This is a tracker, not a sample mangler