Releases on June 4th, 2009 and before

sourceforge
gnuwin32 on SourceForge libpng/1.2.37/libpng-1.2.37-src-setup.exe libpng/1.2.37/libpng-1.2.37-setup.exe libpng/1.2.37/libpng-1.2.37-lib.zip libpng/1.2.37/libpng-1.2.37-doc.zip libpng/1.2.37/libpng-1.2.37-bin.zip libpng/1.2.37/libpng-1.2.37-src.zip
github
cms-sw/cmssw on GitHub CMSSW_2_2_13_HLT
github
mamedev/mame on GitHub mame0131u4
sourceforge
portableapps/Pidgin Portable on SourceForge Pidgin Portable 2.5.6 Rev 2/PidginPortable_2.5.6_Rev_2.paf.exe
github
FarGroup/FarManager on GitHub builds/2.0.979
github
glennrp/libpng on GitHub v1.4.0beta62 v1.2.37
github
FarGroup/FarManager on GitHub builds/2.0.978
github
vim/vim on GitHub v7.2.196
github
arvidn/libtorrent on GitHub libtorrent-0_13_2
github
vim/vim on GitHub v7.2.195 v7.2.194 v7.2.193 v7.2.192
github
FarGroup/FarManager on GitHub builds/2.0.977 builds/1.75.2587
sourceforge
portableapps/Pidgin Portable on SourceForge Pidgin Portable 2.5.6/PidginPortable_2.5.6.paf.exe
Maybe you can find something interesting in this list