Refugee Foundation (Netherlands Refugee Foundation) is a Dutch aid organization which primarily focuses on providing (emergency) assistance to refugees and displaced people. They offer their direct help to individuals, as well as shelter, medical provision, relief goods, food, drinking water and sanitary facilities in urgent need.
Primarily this is not a volunteer website, but rather a bigger organization providing support through donations on a big scale. However, positions in their team such as an online ambassador might be open at times, so if you’re interested in a bigger project it might be worth it to give them a call.
Email them at email@example.com if you want to volunteer.