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Quadstore

Free#24 of 26 in RDF Databases

Quadstore: A focused open-source RDF store for embedding in browser and server-side JavaScript apps. Ranked #24 of 26 in RDF Databases by our editors (6.8/10); pricing: Open source; best for embedded JavaScript and browser RDF storage.

6.8/10Editor score

Visit Quadstore

Quadstore6.8 Visit Quadstore

At a glance

Editor score
6.8 / 10
Pricing
Open source
Best for
Embedded JavaScript and browser RDF storage
Paid from
Free
Deployment options
Self-hosted
Facts checked
21 Sep 2026

Where it wins
- Implements RDF/JS Sink, Source, and Store interfaces
- Supports SPARQL 1.1 through the separate quadstore-comunica engine
- Offers browser persistence, named graphs, streaming, and configurable indexes
Where it doesn't
- RDF-star support is false
- Turtle is the listed RDF format
- Self-hosted deployment places infrastructure responsibility with the developer

Our verdict on Quadstore

Quadstore is an open-source RDF graph database and triplestore for JavaScript runtimes, including browsers, Node.js, Deno, and Bun. Written in TypeScript, it is designed for developers embedding RDF storage and querying into browser-side or server-side JavaScript applications. The library implements RDF/JS Sink, Source, and Store interfaces, while SPARQL querying is provided through the separate quadstore-comunica engine. Its positioning is specialized: JavaScript applications that need RDF storage inside the application rather than a hosted commercial database.

Storage and data handling are the strongest reasons to consider Quadstore. It uses configurable LevelDB-compatible backends and supports persistent on-disk and browser-side storage options. Developers can work with named graphs, streaming quad insertion, deletion, and retrieval, range matching, configurable quad indexes, and prefix mappings. Blank-node scoping across imports and writes is also part of the feature set. These capabilities give the library a practical fit for applications that need control over storage behavior and incremental RDF operations across web and API environments.

The trade-off is a narrower scope than a broad RDF platform. Deployment is self-hosted, and the product is a developer library rather than a hosted service with managed operations. RDF-star support is false, while Turtle is the listed RDF format; the category positioning also identifies limited verified federation, reasoning, and platform breadth. Choose Quadstore when an application already runs in a JavaScript runtime and needs embedded RDF storage, browser persistence, or streaming access. Consider a broader alternative when federation, reasoning, additional verified RDF formats, or a wider deployment model are central requirements.

Your product? Our editors can test Quadstore in depth and publish a review, labelled as paid · from $149/mo →

Quadstore pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

Quadstore fact sheet

Free plan	Not verified
Paid from	Free
Deployment options	Self-hosted
SPARQL support	Sparql 1.1
Reasoning support	Not verified
RDF-star support	No
Federated queries	Not verified
Supported RDF formats	Turtle
Deployment	Self-hosted, Desktop, Browser extension
Platforms	Web
Support	Docs, Community
Built for	Solo, Small business (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	21 Sep 2026

Alternatives to Quadstore

See all Quadstore alternatives →

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Featured on iTechGuides

Quadstore is listed in our RDF Databases directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update