1. Postgresql TopnTopN is an open source PostgreSQL extension that returns the top values in a database according to some criteria
2. Docker🚢 Docker images and configuration for Citus
4. Cstore fdwColumnar storage extension for Postgres built as a foreign data wrapper. Check out https://github.com/citusdata/citus for a modernized columnar storage implementation built as a table access method.
5. Pg shardATTENTION: pg_shard is superseded by Citus, its more powerful replacement
7. Postgresql HllPostgreSQL extension adding HyperLogLog data structures as a native data type
10. CitusDistributed PostgreSQL as an extension
12. Pg paxosBasic implementation of Paxos and Paxos-based table replication for a cluster of PostgreSQL nodes
16. citus docsDocumentation for Citus. Distributed PostgreSQL as an extension.