Releases in January 2006 and before

github
cms-sw/cmssw on GitHub CMSSW_0_4_0
github
FarGroup/FarManager on GitHub builds/1.70.2071
sourceforge
gparted/gparted on SourceForge gparted-0.2/gparted-0.2.tar.bz2
sourceforge
upp on SourceForge OldFiles/20060129.zip
github
FarGroup/FarManager on GitHub builds/1.70.2070
github
microsoft/git on GitHub v1.1.5 v1.0.13
github
GNOME/gtk on GitHub GTK_2_8_11
github
scop/bash-completion on GitHub 20050712-alt02
github
GNOME/glade on GitHub GLADE3_2_91_0
sourceforge
winmerge on SourceForge OldFiles/WinMerge.chm OldFiles/WinMerge-2.5.3.1-src.zip OldFiles/WinMerge-2.5.3.1-src.7z OldFiles/WinMerge-2.5.3.1-exe.zip OldFiles/WinMerge-2.5.3.1-exe.7z OldFiles/WinMerge-2.5.3.1-Setup.exe
github
arvidn/libtorrent on GitHub libtorrent_asio_bp
github
FarGroup/FarManager on GitHub builds/1.70.2069 builds/1.70.2068 builds/1.70.2067 builds/1.70.2066
sourceforge
gameextractor on SourceForge Game Extractor 1.5x/1.5508/source_15508.zip Game Extractor 1.5x/1.5508/extract_15508.exe Game Extractor 1.5x/1.5508/extract_15508.zip Language Packs/1.5508/Czech_ASCII.txt Language Packs/1.5508/Castellano_Spanish.txt Language Packs/1.5508/Czech_Unicode.txt
Maybe you can find something interesting in this list