: While development has stopped, a final "Universal Binary" update was released in December 2020 to provide basic support for Apple M1 architecture.

: You can still find the installer for Version 16.0.5 on various software repositories, but it requires a pre-existing serial number for activation. Where to Find Your StuffIt Deluxe 16 Serial Number

In December 2019, Smith Micro Software officially announced the for the StuffIt product line. No new updates or versions will be released, and the official web store no longer sells new licenses.

How to unarchive old Stuffit Deluxe Archive Manager archives

: If you purchased the software digitally while it was still active, the serial number should be in your confirmation email from Smith Micro or Content Paradise.

Official serial numbers for StuffIt Deluxe 16 are typically unique to the individual purchase and follow a specific format.

: For physical copies, the license key is located on the back of the disc sleeve (for box versions) or inside the DVD case.

Before hunting for a serial number, ensure your system can run the software. StuffIt Deluxe 16 moved to a architecture.

: StuffIt Deluxe registration numbers usually begin with the prefix DLX , while the Standard version uses DRP . Compatibility & Technical Requirements