These downloads are for outdated versions, which are no longer maintained.
For current and newer versions, please go to the web site for Racket.
Package:   DrScheme
Version:   301
Platform:   Source code for Unix (X11)
Type:   Gunzipped TAR Archive
File:   plt-301-src-unix.tgz
Size:   13Mb

Download links:     (Choose the nearest site)

Installation instructions

This is a gzipped TAR archive. If you use recent GNU tar, then you can unpack it with a single tar xvzf plt-301-src-unix.tgz command. Otherwise you need to gunzip the file first using gunzip plt-301-src-unix.tgz, then unpack the resulting file with tar xvf plt-301-src-unix.tar.

(Software License)