Releases in September 2006 and before

github
gitster/git on GitHub v1.4.2.2
github
torproject/tor on GitHub tor-0.1.1.24
github
GNOME/glade on GitHub GLADE3_3_0_BRANCHPOINT GLADE3_3_0_2
freedesktop-gitlab
mesa/mesa on Freedesktop GitLab texmem_0_3_20060929
github
vapier/ncompress on GitHub v4.2.4.1-old v4.2.4-old
github
bminor/binutils-gdb on GitHub binutils-csl-sourcerygxx-4_1-22 binutils-csl-sourcerygxx-4_1-21 binutils-csl-arm-2006q3-21
gitlab
libvirt/libvirt on GitLab v0.1.7 LIBVIRT_0_1_7
github
cms-sw/cmssw on GitHub CMSSW_1_0_2
github
codership/mysql-wsrep on GitHub clone-5.0.26-build
github
bminor/binutils-gdb on GitHub binutils-csl-palmsource-arm-prelinker-1_0-1
github
wine-mirror/wine on GitHub wine-0.9.22
github
belaban/JGroups on GitHub JGroups_2_2_7_SP1
sourceforge
upp on SourceForge upp-development/609-dev3/upp-src-609-dev3.zip upp-development/609-dev3/upp_609-dev3_i386.deb
freedesktop-gitlab
mesa/mesa on Freedesktop GitLab texmem_0_3_20060923
github
net-snmp/net-snmp on GitHub Ext-5-4-pre3
github
mybb/mybb on GitHub mybb_121
github
FarGroup/FarManager on GitHub builds/1.80.151 builds/1.71.2133
Maybe you can find something interesting in this list