Best PostgreSQL Alternatives in 2026
PostgreSQL — The world's most advanced open source database. Here are the top Databases tools you can use instead.
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DuckDB
An in-process SQL OLAP database management system
Clickhouse
The Open Source OLAP database management system
Elastic
The open source platform that powers search, observability, security, and more
FerretDB
A truly Open Source MongoDB alternative, built on Postgres
KeyDB
A Database Built for Scale
Litestream
Streaming SQLite Replication
MySQL
The world's most popular open source database
Neon
Neon Serverless Postgres
Nile
PostgreSQL re-engineered for multi-tenant apps
Pinecone
Vector Database for Vector Search
PlanetScale
The database for developers
SQLite
The most used database engine in the world