For those persons/madarsas/masjids/ any other organisation we can donate the zakah.
بسم الله الرحمن الرحيم
(Fatwa: 688/688/M=06/1435)
It is not lawful to give zakah money in a mosque. However, zakah may be given in a madrasas which provides food and lodge to needy and poor students. You may also give zakah to the poor and needy persons and to those who are eligible for zakah.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband