What to use as replacement for package otrs ?

Hi, otrs in TW and Leap is Community Edition of OTRS. This was abandoned by otrs.com last year or so. There were more than one forks. What will be our favourite replacement for otrs? It seems (looking into OBS) Chris (computersalat) had a look into otobo. But it is not in TW, not to speak of Leap. So I'm curious if it can be a replacement for the old otrs. Where will we go? -- Mit freundlichen Gruessen, Andreas Vetter