Complex sentence: Etere, formerly known as SIS (Societa Italiana Software) was founded in 1980 by the partners Fabio Gattari and Fabio Mazzocchetti.
Split into simpler sentences: Etere, formerly known as SIS (Societa Italiana Software). SIS was founded in 1980 by the partners Fabio Gattari and Fabio Mazzocchetti.