Rui CarmoHex Fiend is a freeware ( BSD -licensed) Cocoa hex editor that can handle data insertion and editing on arbitrarily-sized files, updated to 2.0 in June 2009 to include an embeddable view you can re-use in other apps.
Hex Fiend is a freeware ( BSD -licensed) Cocoa hex editor that can handle data insertion and editing on arbitrarily-sized files, updated to 2.0 in June 2009 to include an embeddable view you can re-use in other apps.