Releases in June 2003 and before

github
lilypond/lilypond on GitHub release/1.7.23
github
GNOME/gimp on GitHub GIMP_1_3_16
gnome-gitlab
GNOME/gimp on Gnome GitLab GIMP_1_3_16
github
doxygen/doxygen on GitHub Release_1_3_2_20030625
github
GNOME/evince on GitHub GPDF_OUTLINES_ANCHOR GPDF_0_104
github
secdev/scapy on GitHub v0.9.14.1 v0.9.13.5 v0.9.13.4
freedesktop-gitlab
mesa/drm on Freedesktop GitLab savage-1_0_0-20031002-trunk-premerge
github
rcaelers/workrave on GitHub before_explosion
sourceforge
irrlicht on SourceForge Irrlicht Sources only release/Non sdk release 0.2.5/irrlicht0.2.5.zip
github
macports/macports-base on GitHub ssen-platform-2-base
github
FarGroup/FarManager on GitHub builds/1.70.1679
github
lilypond/lilypond on GitHub release/1.7.22
sourceforge
zsh on SourceForge zsh/4.0.7/zsh-4.0.7.tar.gz zsh/4.0.7/zsh-4.0.7.tar.bz2 zsh-doc/4.0.7/zsh-4.0.7-doc.tar.gz zsh-doc/4.0.7/zsh-4.0.7-doc.tar.bz2 OldFiles/zsh-4.1.1-doc.tar.bz2 OldFiles/zsh-4.1.1-doc.tar.gz OldFiles/zsh-4.1.1.tar.bz2 OldFiles/zsh-4.1.1.tar.gz
github
wine-mirror/wine on GitHub wine-20030618
github
macports/macports-base on GitHub ssen-platform-1-base
github
FarGroup/FarManager on GitHub builds/1.70.1678 builds/1.70.1677
gnome-gitlab
GNOME/vte on Gnome GitLab vte_0_11_10
Maybe you can find something interesting in this list