Releases in April 2004 and before

github
GNOME/gtk on GitHub GTK_2_4_1
freedesktop-gitlab
xorg/xserver on Freedesktop GitLab XACE-SELINUX-MERGE
github
torproject/tor on GitHub debian-version-0.0.5+0.0.6rc3-1
github
FarGroup/FarManager on GitHub builds/1.70.1770
github
torproject/tor on GitHub debian-version-0.0.5+0.0.6rc2-1
github
reactos/reactos on GitHub backups/ros-branch-0_2_2@12455 ReactOS-0.2.2
github
lavv17/lftp on GitHub lftp-3-0-3
github
FarGroup/FarManager on GitHub builds/1.70.1769
github
FarGroup/FarManager on GitHub builds/1.70.1768
freedesktop-gitlab
xorg/xserver on Freedesktop GitLab XORG-CURRENT-CLOSED
github
torproject/tor on GitHub tor-0.0.6incompat-merged
github
FarGroup/FarManager on GitHub builds/1.70.1767
sourceforge
upp on SourceForge OldFiles/uldar-1.0.11.zip
freedesktop-gitlab
xorg/xserver on Freedesktop GitLab before_20040421_xprint_branch_landing
github
FarGroup/FarManager on GitHub builds/1.70.1766
github
lavv17/lftp on GitHub lftp-3-0-2
github
FarGroup/FarManager on GitHub builds/1.70.1765
github
GNOME/gimp on GitHub GIMP_2_0_1
github
doxygen/doxygen on GitHub Release_1_3_6_20040413
github
GNOME/dia on GitHub DIA_0_93_PRE3
github
reactos/reactos on GitHub backups/scmhack-12042004@12458
kde-gitlab
multimedia/amarok on KDE GitLab v1.0-beta1_new v1.0-beta1
github
wine-mirror/wine on GitHub wine-20040408
Maybe you can find something interesting in this list