Releases in July 2003 and before

github
bestpractical/rt on GitHub rt-3.0.5pre2
github
michaelrsweet/htmldoc on GitHub release-1.8.24b5
github
FarGroup/FarManager on GitHub builds/1.70.1689 builds/1.70.1688 builds/1.70.1687
github
macports/macports-base on GitHub jkh-destrootification-base
sourceforge
graphicsmagick on SourceForge OldFiles/GraphicsMagick-1.1-20030728.zip OldFiles/GraphicsMagick-1.1-20030728.tar.gz OldFiles/GraphicsMagick-1.1-20030728.tar.bz2
github
jimjag/epm on GitHub release-3.7rc1
github
lilypond/lilypond on GitHub release/1.7.29
github
squid-cache/squid on GitHub SQUID_3_0_PRE2
github
openscenegraph/OpenSceneGraph on GitHub OpenSceneGraph-0_9_5-1
github
cyrusimap/cyrus-imapd on GitHub cyrus-imapd-1.7
freedesktop-gitlab
mesa/drm on Freedesktop GitLab i865-agp-0-1-20030728
github
doxygen/doxygen on GitHub Release_1_3_3
github
GNOME/gimp on GitHub GIMP_1_3_17
gnome-gitlab
GNOME/gimp on Gnome GitLab GIMP_1_3_17
github
FarGroup/FarManager on GitHub builds/1.70.1686
github
bestpractical/rt on GitHub rt-3.0.5pre1
github
logrotate/logrotate on GitHub r3-6-10 r3-6-9
github
lilypond/lilypond on GitHub release/1.7.28
gitlab
wireshark/wireshark on GitLab release-0-9-14 ethereal-0.9.14
github
wireshark/wireshark on GitHub release-0-9-14 ethereal-0.9.14
Maybe you can find something interesting in this list