Releases in May 2003 and before

github
secdev/scapy on GitHub v0.9.13.3 v0.9.13.2
sourceforge
graphicsmagick on SourceForge OldFiles/GraphicsMagick-1.1-20030529.zip OldFiles/GraphicsMagick-1.1-20030529.tar.gz OldFiles/GraphicsMagick-1.1-20030529.tar.bz2 OldFiles/GraphicsMagick-1.1-20030523-windows-source.zip
github
FarGroup/FarManager on GitHub builds/1.70.1665
github
lavv17/lftp on GitHub lftp-2-6-6
github
doxygen/doxygen on GitHub Release_1_3_1
sourceforge
pcre on SourceForge pcre/4.3/pcre-4.3.tar.gz pcre/4.3/pcre-4.3.tar.bz2 pcre/4.0/pcre-4.0.tar.bz2 pcre/4.2/pcre-4.2.tar.gz pcre/4.2/pcre-4.2.tar.bz2 pcre/4.1/pcre-4.1.tar.gz pcre/4.1/pcre-4.1.tar.bz2 pcre/4.0/pcre-4.0.tar.gz
github
FarGroup/FarManager on GitHub builds/1.70.1664 builds/1.70.1663
github
scummvm/scummvm on GitHub closed/branch-0-4-0
github
lilypond/lilypond on GitHub release/1.7.20
github
doxygen/doxygen on GitHub Release_1_3_20030524
github
FarGroup/FarManager on GitHub builds/1.70.1662
github
FarGroup/FarManager on GitHub builds/1.70.1661
freedesktop-gitlab
mesa/drm on Freedesktop GitLab config-0-0-1-20031005-freeze
Maybe you can find something interesting in this list