.old file extension
- Generic file extension used to denote an old or backup file. Typically a .old file represents an earlier version of a file. Sometimes .old is used to replace the original file extension, other times it may be appended as an additional file extension.
Can you add to this? Do you know of any applications not already listed which will work with .old files, view .old files or open .old files? Are you able to contribute any additional reference information or file format information about .old files or have you spotted any errors or omissions? If so please let us know by emailing us at firstname.lastname@example.org - Thank you.