osdir.com

apache-airflow-development
ubuntu-developers-discuss
apache2-developers
apache-fineract-developers
ubuntu-users
apache-druid-developers
apache-beam-users
apache-flink-development
apache-activemq-developers
python-development
apache-cassandra-development
apache-camel-users
apache-cloudstack-users
openstack
apache-flex-development
(all)