Simplify the following text for a Grade 10 native English-speaking person.
Original: CrossOver , known before version 6.0 as CrossOver Office , is the collective name for four commercial and proprietary programs developed by CodeWeavers that allow many Windows-based applications to run on Linux and Mac OS X using a compatibility layer .
Simplified: CrossOver is the collective name for four commercial programs developed by CodeWeavers that allow using Windows programs on Mac OS X and Linux .