http://www.fileinfo.net/extension/prc

- Corel Presentation (Most common)
Program(s) that open prc files: Windows - Corel Presentations (part of Corel WordPerfect Office)

- Palm Resource Code File
Program(s) that open prc files: Mac OS - Palm Desktop
Windows - Palm Desktop

Edit: Doprčic, zas je někdo rychlejší!