- adminpack — pgAdmin support toolpack
- amcheck — tools to verify table and index consistency
- auth_delay — pause on authentication failure
- auto_explain — log execution plans of slow queries
- basebackup_to_shell — example "shell" pg_basebackup module
- basic_archive — an example WAL archive module
- bloom — bloom filter index access method
- btree_gin — GIN operator classes with B-tree behavior
- btree_gist — GiST operator classes with B-tree behavior
- citext — a case-insensitive character string type
- cube — a multi-dimensional cube data type
- dblink — connect to other QHB databases
- dict_int — example full-text search dictionary for integers
- dict_xsyn — example synonym full-text search dictionary
- earthdistance — calculate great-circle distances
- file_fdw — access data files in the server's file system
- fuzzystrmatch — determine string similarities and distance
- hstore — hstore key/value datatype
- intagg — integer aggregator and enumerator
- intarray — manipulate arrays of integers
- isn — data types for international standard numbers (ISBN, EAN, UPC, etc.)
- lo — manage large objects
- ltree — hierarchical tree-like data type
- old_snapshot — inspect old_snapshot_threshold state
- pageinspect — low-level inspection of database pages
- passwordcheck — verify password strength
- pg_buffercache — inspect QHB buffer cache state
- pgcrypto — cryptographic functions
- pg_freespacemap — examine the free space map
- pg_prewarm — preload relation data into buffer caches
- pgrowlocks — show a table's row locking information
- pg_stat_statements — track statistics of SQL planning and execution
- pgstattuple — obtain tuple-level statistics
- pg_surgery — perform surgery on relation data
- pg_trgm — support for similarity of text using trigram matching
- pg_visibility — visibility map information and utilities
- pg_walinspect — low-level WAL inspection
- postgres_fdw — access data stored in external QHB servers
- seg — a datatype for line segments, or floating point intervals
- sepgsql — SELinux-, label-based mandatory access control (MAC) security module
- spi — Server Programming Interface features/examples
- sslinfo — obtain client SSL information
- tablefunc — functions that return tables (crosstab and others)
- tcn — a trigger function to notify listeners of changes to table content
- test_decoding — SQL-based test/example module for WAL logical decoding
- tsm_system_rows — the SYSTEM_ROWS sampling method for TABLESAMPLE
- tsm_system_time — the SYSTEM_TIME sampling method for TABLESAMPLE
- unaccent — a text search dictionary which removes diacritics
- uuid-ossp — a UUID generator
- xml2 — XPath querying and XSLT functionality