Home : File Types : SITX File

.SITX File Extension

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File TypeStuffIt X Archive

DeveloperSmith Micro
3.7 (12 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryCompressed Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.

What is an SITX file?

A SITX file is a compressed file that uses the Stuffit X archive format created by Smith Micro StuffIt 7.0 or later. The StuffIt X format features Smith Micro's exclusive ATOM compression technology and offers up to 20% more compression than standard Stuffit (.SIT) archives.

More Information

SITX supports long-filenames, preservation of UNIX (ie: OS X) and Windows file permissions, and error correction, which fixes data transmission errors. It may also include 512-bit encryption for file security purposes. Version 9 and later allows 15-30% compression of JPEG images.

NOTE: StuffIt was previously developed by Allume Systems (formerly Aladdin Systems), but is now developed and distributed by Smith Micro.

Programs that open SITX files
Smith Micro StuffIt Deluxe for Windows
Smith Micro StuffIt Deluxe 16
Incredible Bee Archiver
The Unarchiver
Updated 6/3/2016