Yes, there are. A lot of 'Harry Potter Salem Fanfiction' delves into the idea of Salem witches having a different kind of magic compared to the European magic in the Potter series. It could be that their magic is more nature - based or has a stronger connection to the spiritual realm. In these fanfictions, when the two magical cultures meet, there are often interesting conflicts and collaborations.
One interesting 'Harry Potter Salem Fanfiction' could be those that explore the connection between the magical world of Harry Potter and the historical context of Salem. For example, some fanfictions might imagine how the Salem witch trials could have influenced the wizarding world in the Potter universe. Maybe there are witches from Salem who later migrated to the UK and interacted with the Hogwarts founders.
There are quite a few. Some 'Harry Potter Salem Fanfiction' focuses on a character from Salem ending up at Hogwarts. It's really cool to see how they adapt to the different magical environment there. They might bring their own unique magical practices from Salem, like different spells or potion - making techniques that add a new flavor to the Hogwarts experience.