It depends on which linux distribution you're planning to install it. Distributions based on RPM are Red Hat, CentOS, OpenSuSE, Fedora and many others. Distributions based on DEB are Debian and Ubuntu. Distribution based on TAR.GZ are Slackware, Slax and so on.
Usually tar.gz files contain the source code of a particular piece of software, but in this case I think it refers to the Slackware packages.