🚜 Query.Farm

What if your database could do more?

DuckDB is already fast, embedded, and powerful. But what if you could query Kafka streams in real-time? Validate JSON schemas with SQL? Run fuzzy string matching at scale? Connect to Apache Arrow Flight servers?

That’s where Query.Farm comes in.

We build the extensions that unlock DuckDB’s full potential — transforming it from a great analytical database into a complete data platform.

🚀 20+ Extensions, Millions of Downloads

Our DuckDB extensions have been downloaded over 2 million times by data teams worldwide. Each one solves real problems:

Stream Live Data

Tributary — Query Apache Kafka topics with SQL, no ETL required
Radio — Broadcast and receive events via WebSockets and Redis Pub/Sub
Airport — Connect to remote data sources over Apache Arrow Flight

Find Duplicates & Match Records

Bitfilters — Space-efficient bloom filters and probabilistic data structures
Rapidfuzz — High-performance fuzzy string matching for deduplication
Datasketches — Approximate analytics with HyperLogLog, quantiles, and more

Secure & Hash Data

Crypto — Cryptographic hash functions (SHA-256, Blake3, HMAC)
Hashfuncs — Fast non-cryptographic hashing for partitioning and indexing

Transform & Template

Jsonata — Transform JSON with JSONata query language
Minijinja — Jinja2 templating inside SQL queries
Tera — Rust-powered template engine for dynamic SQL

Plus So Much More

Spatial indexing (Lindel), statistical distributions (Stochastic), text visualization (Textplot), shell integration (ShellFS), and more.

👉 Explore all extensions or browse the complete directory

🛠️ We Build What DuckDB Needs

Not every problem has an off-the-shelf solution. We create custom extensions tailored to your use case:

New file formats and data sources
Domain-specific SQL functions
Integration with internal APIs and services
Performance-critical data transformations

We work in C++, Rust, and Python — choosing the right tool for the job, not the easiest one.

Need something built? Let’s talk →

🧠 Expert DuckDB Consulting

Building with DuckDB for the first time? Scaling to production? We help teams:

Architect embedded analytics systems
Optimize query performance and memory usage
Integrate DuckDB with Apache Arrow, Parquet, and cloud storage
Deploy to edge devices, containers, or serverless environments

From one-off audits to ongoing partnerships — we meet you where you are.

Learn about consulting →

🌾 Built by Data Engineers, For Data Engineers

We’re database engineers, systems builders, and DuckDB contributors. We believe in:

Local-first computing — query data where it lives
Simple, composable tools — not bloated infrastructure
Open standards — Apache Arrow, Parquet, SQL

Query.Farm is an independent company. We’re not affiliated with DuckDB Labs or the DuckDB Foundation, but we’re grateful to build on their incredible work and contribute to the growing ecosystem.

💡 Start Exploring

Ready to extend DuckDB’s capabilities?

Browse our extensions — Find what you need
Read the blog — Tutorials and technical deep-dives
Get in touch — Custom extensions and consulting

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