lzop: www.lzop.org

rzip: rzip.samba.org

lzma: martinus.geekisp.com/rublog.cgi/Projects/LZMA

p7zip 和 lzma: adn.diwi.org/debian

其他: sourceforge.net

SSH 和 scp: www.rpmseek.com

Canterbury Corpus: corpus.canterbury.ac.nz

Calgary Corpus: links.uwaterloo.ca/calgary.corpus.html