SQX

File Format
Name	SQX
Ontology	Electronic File Formats Archiving SQX
Extension(s)	.sqx

SQX is an open-source archiver. The source code download includes a text file giving file format details. The source code is archived as a .sqx file itself, but fortunately an SQX extractor is also included as a standalone Windows .exe. (Bad luck for users of any non-Windows platform, though.)

Links

• Wikipedia article
• Official site
• Total SQX plugin for Total Commander file manager
• Some discussion of SQX