Releases in October 2008 and before

github
GeSHi/geshi-1.0 on GitHub v1.0.8.1 RELEASE_1_0_8_1
github
BOINC/boinc on GitHub client_release/6.3/6.3.21
github
net-snmp/net-snmp on GitHub Ext-5-2-5-1 Ext-5-3-2-3 Ext-5-4-2-1
github
zotero/zotero on GitHub 1.5-sync3.2
github
GNOME/gimp on GitHub GIMP_2_6_2
github
mybb/mybb on GitHub mybb_1403
sourceforge
irrlicht on SourceForge Irrlicht SDK/1.4/1.4.2/API-Docs.pdf
sourceforge
irrlicht/Irrlicht SDK on SourceForge 1.4/1.4.2/API-Docs.pdf
github
openscenegraph/OpenSceneGraph on GitHub OpenSceneGraph-2.7.4
github
BOINC/boinc on GitHub client_release/6.3/6.3.20
sourceforge
gnuwin32 on SourceForge grap/1.43/grap-1.43-src-setup.exe grap/1.43/grap-1.43-setup.exe grap/1.43/grap-1.43-doc.zip grap/1.43/grap-1.43-bin.zip
Maybe you can find something interesting in this list