List of Core Extensions

Name	Description	Maintainer	Support tier	Aliases
autocomplete	Autocompletion for CLI client	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
avro	Avro files reading	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
aws	AWS S3 functionality	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
azure	Filesystem abstraction for Azure Blob Storage	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
delta	Delta Lake format	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
ducklake	DuckLake format	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
encodings	Read CSVs in 1000+ encodings	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
excel	Excel (.xlsx) read/write	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
fts	Full-text search	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
httpfs	HTTP(S) and S3 - file read/write operations	DuckDB team	PrimaryPrimary clients are covered by community support.	http, https, s3
iceberg	Apache Iceberg table format	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
icu	Time zones and collations using the ICU library	DuckDB team	PrimaryPrimary clients are covered by community support.
inet	IP-related data types and functions	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
json	JSON operations	DuckDB team	PrimaryPrimary clients are covered by community support.
lance	Lance tables read/write	Third party
motherduck	MotherDuck connectivity	Third party		md
mysql	MySQL database read/write operations	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.	mysql_scanner
odbc	ODBC connectivity	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.	odbc_scanner
parquet	Parquet files read/write	DuckDB team	PrimaryPrimary clients are covered by community support.
postgres	PostgreSQL database read/write operations	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.	postgres_scanner
quack	DuckDB-Quack protocol for remote access	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
spatial	Geospatial data and functions	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
sqlite	SQLite database read/write operations	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.	sqlite_scanner, sqlite3
tpcds	TPC-DS data generation and query	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
tpch	TPC-H data generation and query	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.
unity_catalog	Unity Catalog connectivity	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.	uc_catalog
ui	Local UI for DuckDB	Third party
vortex	Vortex files read/write	Third party
vss	Vector similarity search queries	DuckDB team	SecondarySecondary extensions are supported on a best-effort basis.

The Maintainer column denotes whether the extension is maintained by the DuckDB team or by a third party. For the extensions maintained by the DuckDB team, the Support tier column denotes the extension's support status. Primary extensions are covered by community support. Secondary extensions are supported on a best-effort basis. That said, they still receive frequent bugfixes/updates and are shipped with new DuckDB releases.