The POLIN Museum of the History of Polish Jews, has posted a set of testimonies by Holocaust survivors:

They Survived the Holocaust. Survivors’ Accounts

It is truly difficult to find words to describe the ultimate atrocities of the Holocaust. Therefore, the words of those who managed to survive the Genocide are all the more important. For the International Holocaust Remembrance Day we present the survivors’ accounts from the oral history collection of POLIN Museum of the History of Polish Jews.

Webpage here.