Slackware Packages
Slackware Package Repository
I've been maintaining a repository of additional Slackware packages for several years now. The packages are updated regularly when new versions are released, similar to "Slackware-current" (but the repositories are for releases).
For a period of time, I mirrored the packages at "linuxpackages.net" [1], but they didn't like that [2].
Main page of repository: http://slackware.oc9.org/