Noahism or Brith Olam but perhaps better known as The Rainbow Covenant, describes any system promoting what Judaism considers to be the 7 fundamental principles of civilized Humans. These principles include:

No Injustice
No Murder
No Idolatry
No Blasphemy
No Lewdity
No Cruelty to animals
No Theft

Many individuals and groups around the world today and throughout history have upheld these principles. Judaism considers such people to be Hokhmei Umot haOlam. Any of the Hokhmei Umot haOlam who have come to believe in Noahide Judaism could be considered Hasidei Umot haOlam.