ParadeDB

pgvector

pgvector/pgvector

Popular

PostgreSQL extension for vector similarity search with HNSW and IVFFlat indexes; vectors next to your data.

PostGIS

postgis/postgis

Popular

Spatial extension that makes Postgres the standard open-source geospatial database.

TimescaleDB

timescale/timescaledb

Popular

Postgres extension for time-series and real-time analytics with hypertables and compression, by TigerData.

Citus

citusdata/citus

Extension that distributes Postgres tables across nodes for horizontal scale-out; powers Azure Cosmos DB for PostgreSQL.

pg_duckdb

duckdb/pg_duckdb

Rising

Embeds DuckDB in Postgres for fast analytical queries over tables and Parquet/Iceberg files.

PgBouncer

pgbouncer/pgbouncer

Popular

Lightweight connection pooler for Postgres, standard in front of busy or serverless workloads.

Elasticsearch

elastic/elasticsearch

Popular

Distributed search and analytics engine on Lucene, widely used for full-text, logs and vector search.

OpenSearch

opensearch-project/OpenSearch

Popular

Apache-licensed fork of Elasticsearch and Kibana, governed by the Linux Foundation's OpenSearch Foundation.

Algolia

algolia.com

Popular

Hosted search-as-a-service API with typo tolerance, instant UI widgets and AI ranking.