The Manifesto of Non-hostile communication is at the core of the AMeLiE project. It contains 10 underlying principles and good practices in communication, regardless of whether it is online or offline. It was developed by Palore Ostili, a social awareness-raising project agains the use of hostile communication. Parole Ostili was born in Italy, and is now one of the partners of the AMeLiE project.

The training materials developed by AMeLiE refer to one of more of the manifesto principles. The Manifesto is available in 33 different languages. It can be downloaded, printed and put in every classroom, office, company, public space, to raise awareness and remind educators, parents, citizens, about the principles of non-hostile communication and prevent hate speech. It has also been contextualised for: