Releases on May 5th, 2015 and before

github
ManageIQ/manageiq on GitHub botvinnik-1-rc3
github
edx/edx-platform on GitHub release-2015-05-05
github
ntpsec/ntpsec on GitHub NTP_4_3_29
github
moodle/moodle on GitHub v2.9.0-rc1
github
vim/vim on GitHub v7.4.726
sourceforge
peazip on SourceForge Translations/5.6/by-lt.txt Translations/5.6/by-cr.txt
github
vim/vim on GitHub v7.4.725
Maybe you can find something interesting in this list