The answer is both on the Distrowatch page [1] and their website [2]:
> What are the main features of Sabily?
> The main software are: Zekr and Mus-haf Othman (Quran study tools), Minbar and Firefox-praytimes (prayer times applications), Monajat (application that popups prayers every predetermined time), Hijra (islamic calendar) and Nanny (parental control tool). Arabic language is also well supported. And of course the graphic design is also customized (see screenshots).
> What are the main features of Sabily?
> The main software are: Zekr and Mus-haf Othman (Quran study tools), Minbar and Firefox-praytimes (prayer times applications), Monajat (application that popups prayers every predetermined time), Hijra (islamic calendar) and Nanny (parental control tool). Arabic language is also well supported. And of course the graphic design is also customized (see screenshots).
[1] http://distrowatch.com/table.php?distribution=sabily
[2] http://www.sabily.org/website/en/sabily/what-is-sabily.html