The publishers of this website explain that Aid to the Church in Need (ACN) is an international Catholic charity under papal jurisdiction, which yearly offers financial support to more than 5,000 projects worldwide.
Catholic charities like ACN support the poor and persecuted Church with prayer, pastoral relief and material assistance. Help is given to refugees of all denominations.
Today this charity raises around $US 70 million dollars annually, which it distributes to the Church in need in 144 different countries around the world. It is reliant on private donations.
This is a useful Catholic information source, well worth a 'virtual visit' online.
You can read all about this charity at their website: https://www.aidtochurch.org/index.html