Simplify the following text for a Grade 10 native English-speaking person.
Original: OpenOffice.org Impress , a part of the OpenOffice.org office suite and developed by Sun Microsystems , is a presentation program compatible with and similar to Microsoft PowerPoint .
Simplified: OpenOffice.org Impress , a part of the OpenOffice.org office suite package and created by Sun Microsystems , is a presentation program similar to Microsoft PowerPoint .