Verified organizations for humanitarian aid

There are a lot of people who would like to give their support some way. Please, add below proven organizations, which could be suggested, when people ask how they can help.

There might be different forms. A good unexpected example is in Czech Republic - a website where different people offer various help, like teaching, transportation, accommodation, etc., yet, it is only in Czech: https://www.pomahejukrajine.cz

Let's do a database of proven charity organizations in different countries.