hi.
thanks extremely for asking this questions. because i wished that
someone asked and i found the reply.
i realy wish to use sumatra.
because: its realy simple, open source, has persian translation and
use little system resources, fast, stable and its simpleness even for
novice people like me.
but adobe its very professional and with complex settings and i could
not tolerate it.
when i used adobe most of times, the program crashed, my system hanged
and i turned my system off only with the power botton in my laptop and
i did not have any way to prevent my system from these terrible hangs.
and i uninstalled it forever.

i wish that we united and send letter for its developers together and
request for its accessibility or take help from someone who knows
programming and is familiar with accessibility.
since this program is open source, we have many doors that we can open
them to benefit from this program and we should insist on to achieve
our legal goal.
moreover, i heard that this program its accessible for narrator.
hope for very fast solution.

--
Those who follow the Messenger-Prophet, the Ummi, whom they find
written down with them in the Taurat and the Injeel [who] enjoins them
good and forbids them evil, and makes lawful to them the good things
and makes unlawful to them impure things, and removes from them their
burden and the shackles which were upon them; so [as for] those who
believe in him and honor him and help him, and follow the light which
has been sent down with him, these it is that are the successful.
holy quran, chapter 7, verse 157.
best website for studying islamic book in different languages
al-islam.org