Comment Brahms (Score 5) 163
Have a look at Brahms. This project was previously known as Koobase, but changed name so as to sound a bit less derivative.
As the old name suggests, it is a MIDI sequencer in the style of Cubase.
It is looking very promising, but at the time I last used it (a few months ago - so I may be out of date) it wasn't ready to replace Cubase.
