Releases in May 2018 and before

github
apache/hbase on GitHub 1.3.2.1RC0
github
discourse/discourse on GitHub v2.1.0.beta1 v2.0.0
github
edx/edx-platform on GitHub release-2018-06-01-10.30
github
keymanapp/keyman on GitHub windows-release-beta-10.0.1100.0
Maybe you can find something interesting in this list