Side by side

PGlite vs Qdrant

Both stand on embedded databases. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

PGlite

Free plan Self-hostedWeb

PGlite offers a compact way to embed Postgres across several JavaScript runtimes, with persistence options, extensions, and framework integrations. Its connection model and socket-server caveat matter when planning concurrent or server-style use.

Visit PGlite

Qdrant

Free plan APILinuxMac+3

Qdrant offers flexible vector storage and retrieval, with APIs, client libraries, integrations, and cloud or local deployment. Check the free cloud tier’s resource limits and configure security controls for self-hosted use.

Visit Qdrant

The facts

	PGlite	Qdrant
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Self-hosted, Web	API, Linux, Mac, Self-hosted, Web, Windows
Lowest paid plan	Free or on request	Free or on request
Plans published	1	5
Maker	Not published	Qdrant
Website	pglite.dev	qdrant.tech
On embedded databases	#20 of 30	#16 of 30

PGlite: what it does well

Runs in browsers, Node.js, Bun, and Deno.
Package is under 3 MB gzipped.
Supports Postgres extensions including pgvector and PostGIS.
Open source with two listed licenses.

What to know first

Uses one exclusive database connection.
Socket server behavior differs from a normal Postgres installation.
Not all socket-server use cases are guaranteed to work.

Qdrant: what it does well

Supports dense, sparse, and multivector configurations.
Hybrid retrieval combines semantic and lexical search.
Provides REST and gRPC APIs and six client language options.
Metadata can filter search results.

What to know first

Free cloud tier is limited to one node, 1GB RAM, and 4GB disk.
Self-hosted deployments require configuration for TLS and encryption.
Open-source self-hosted deployments do not enable authentication by default.

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