Ciao! (THE MOST USUAL GREETING both for meeting and for farewell) Pronto? / Pronto! (at the telephone, for example - ok?) Salve! ( = Hi! )
"Saluto"
ciao
Ciao a tutta la famiglia
Hello is Bonjour Colloquially - Ciao, Come stai? (Pronounced Chao! Komme stai)