Simplify the following text for a Grade 9 native English-speaking person.
Original: In December 1991 , Adobe released Adobe Premiere , which Adobe rebranded to Adobe Premiere Pro in 2003 . In 1994 , Adobe acquired Aldus and added Adobe PageMaker and Adobe After Effects to its production line later in the year ; it also controls the TIFF file format .
Simplified: Adobe is an American software company .