query-farm

DuckDB WireGuard Extension with Quack & Ducklake over Tailscale, Headscale & Co

VGI (Vector Gateway Interface) — DuckDB extension for extending DuckDB in any language over Apache Arrow IPC. No C++/compilation required.

Option pricing+Greeks, bond pricing/yield & day-counts for DuckDB (Python, QuantLib)

PDF tables, word boxes, form fields & page render for DuckDB (Python, pdfplumber)

Lightweight telemetry client for DuckDB C++ extensions that reports platform and version information to Query.Farm

Document & OCR text/metadata extraction for DuckDB (Java, Apache Tika)

XSLT 3.0 / XQuery 3.1 / XPath 3.1 over XML for DuckDB (Python, SaxonC-HE)

Physical unit conversion & dimensional analysis (14 dimensions) for DuckDB (Rust)

Video/audio/container metadata via ffprobe in DuckDB (Go)

BM25 full-text search with stemming & tokenization for DuckDB (Rust, tantivy)

Decode & generate QR/EAN/UPC/Code128 barcodes for DuckDB (Rust, rxing)

Scholarly search across OpenAlex/arXiv/Crossref for DuckDB (Python)

XGBoost for DuckDB/SQL — train/predict model registry, hyperparameter search, native categoricals, feature importance and SHAP, exposed as a VGI worker

Image info, EXIF/GPS, perceptual hashing & thumbnails for DuckDB (Rust)

Rich Excel read (formulas/types) and write query to .xlsx for DuckDB (Java, Apache POI)

Detect text encoding & transcode to UTF-8 / fix mojibake for DuckDB (Rust)

Parse source with tree-sitter — symbols, imports, comments & queries for DuckDB (Rust)

Parse iCalendar (.ics) events & todos for DuckDB (Java, iCal4j)

Query OData v2/v4 services as tables in DuckDB (Go)

Transport-agnostic RPC framework for Java built on Apache Arrow IPC — the Java port of vgi-rpc. Define services as Java interfaces; calls flow over pipe, subprocess, Unix-socket, shared-memory, or HTTP.