"gzip is a software application used for file compression. gzip is short for GNU zip; the program is a free software replacement for the compress program used in early Unix systems, intended for use by the GNU Project..." — via wikepedia, the free encyclopedia —
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Handling (Tar/GZip) and (Tar/Bzip2) archives
http://blog.dipinkrishna.info –
(Tar/GZip) archives end in ".tar.gz" and (Tar/Bzip2) archives end in ".tar.bz2". Bzip2 is the newer, more efficient compression method.
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Gzip, Bzip2 and Lzma compared
http://blog.i-no.de –
There has recently been a discussion about GNU switching from bzip2 to lzma for their distributed tarballs. They still offer gzip tarballs as an alternative. However, Gentoo has been preferring the bzip2 tarballs mostly due to the improved pack ratio of bzip2. Unfortunately, the software for lzma is not (yet) as mature as some would like.
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