There is only one file type that uses the .TCZ extension:
Tiny Core File
File created solely by Tiny Core, a Linux operating system; loaded by scripts during the Tiny Core start-up; contains packages of information needed to run the core.
NOTE: Version 2.7 and later of the Tiny Core only runs TCZ files.
Xlibs.tcz - Contains libraries run by Tiny Core.
Xprogs.tcz - Contains programs run by Tiny Core.
tcz.info - Information file describing its contents.
tcztools.tcz - Enables the user to create and edit TCZ extensions.
|Tiny Core Linux||Free|
Updated: May 27, 2013