||Standard (developed by AT&T Labs)
||★ ★ ★ ★ ★ Popular
Contains multiple files stored as one archive; created with the Unix tar program; TAR files are not automatically compressed, so they are often compressed with Gnu Zip (which creates a .GZ file).
A filename that ends in ".tar.gz" is a TAR archive that has been compressed with Gnu Zip compression; sometimes the shortened .TGZ extension is used as well.
B1 Free Archiver
||August 20, 2008
Information from the PC File Extensions Reference