Aladdin Systems has released StuffIt Engine SDK 5.5, which allows software developers to include the latest StuffIt Engine in their software.

The new SDK (software developer kit) gives third-party developers support for StuffIt archives (.sit), the Mac standard for archiving and compression.

By licensing the StuffIt Engine, a developer's product can create smaller StuffIt 5.5 archives, self-extracting archives (.sea), and encrypted archives.

New in version 5.5 is support for Zip compression and Bzip compression and decompression, Mac OS 9.0 and Windows StuffIt self-extracting archives. It also provides 25 per cent tighter compression than the previous version.

The StuffIt Engine SDK 5.5 is sold through licence agreements directly from Aladdin.