As the Masjid is closed this Ramadan you can pay your Zakatul Fitr to the following charities: 

Paying Zakatul Fitr is an obligation as Ibn Umar reported the Messenger صلى الله عليه وسلم to have said:

Allah’s Apostle enjoined the payment of one Sa’ of dates or one Sa’ of barley as Zakat-ul-Fitr on every Muslim slave or free, male or female, young or old.