Simplify the following text for a Grade 8 native English-speaking person.
Original: Because of how the name â open sourceâ is used , almost all free software is open source software , and almost all open source software is free software .
Simplified: From 1998 onward , alternative terms for free software came into use . The most common are software libre , free and open source software ( FOSS ) and free , libre and open source software ( FLOSS ) .