Releases in October 2005 and before

sourceforge
upp on SourceForge OldFiles/upp-src-511-beta.zip GPL-sources/SDL-1.2.9/SDL-1.2.9.tar.gz
github
net-snmp/net-snmp on GitHub Ext-5-3-pre1
github
gitster/git on GitHub v0.99.9a
github
gentoo/portage on GitHub v2.0.53_rc7
github
i2p/i2p.i2p on GitHub i2p_0_6_1_4
github
libfuse/sshfs on GitHub sshfs_1_3
sourceforge
ditto-cp on SourceForge Ditto/2.6.4/DittoSetup_2_6_4_0.exe Ditto/2.6.4/DittoSetup_2_6_4_0_DAO_Install_Included.exe Ditto/2.6.4/DittoSource_2_6_4_0.zip
github
apache/maven-surefire on GitHub surefire-booter-1.4 surefire-1.4
github
mono/mono on GitHub mono-1-1-7-12
github
reactos/reactos on GitHub backups/ros-branch-0_2_8@18976 ReactOS-0.2.8
github
OpenNMS/opennms on GitHub feature-jasperreports-root
github
GNOME/gimp on GitHub GIMP_2_2_9
github
secdev/scapy on GitHub v1.0.1.4 v1.0.1.3
github
FarGroup/FarManager on GitHub builds/1.70.2053
Maybe you can find something interesting in this list