SITX and SIT compressed archives are from various editions of StuffIt, so you may as well be able to repack one to another with any of the StuffIt programs. There does not seem to be great difference between .sitx and .sit files, but you can freely convert between them as you wish.
Convert StuffIt archive to StuffIt archive format.
We have found 4 software records in our database eligible for .sitx to .sit file format conversion.
Microsoft Windows software - convert sitx to sit on Windows
StuffIt Deluxe is commercial compression utility, that supports about 25 archive formats such as ZIP, GZIP, SIT etc.. StuffIt has also integrated own SIF StuffIt Image Format used to compress picture images. StuffIt Deluxe is available for Microsoft Windows and Mac OS X.
Convert from sitx file
to sit file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned sitx to sit. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Stuffit is easy to use utility used to create and extract file archives. It is able to create ZIP and SITX archives. StuffIt also opens compressed and encoded attachments and file downloads in over 25 different formats including StuffIt, Zip, RAR and Tar.
Apple macOS / Mac OS X software - convert sitx to sit on OS X
StuffIt Deluxe for Mac is utility used to backup, share, archive, encrypt and shrink photos, music, and other documents. It supports variety of archive and compression file formats.
StuffIt for Mac is archive utility that is able to create ZIP and SITX archives as well as extract 25 different formats including StuffIt, Zip, RAR and Tar.