JSPM

Parquet is a columnar storage format

DuckDB powered by WebAssembly

A fast, interactive TUI for viewing Parquet files

Detect the file type of a file, stream, or data

Fast TypeScript data management framework built on top of the Data Package standard and Polars DataFrames

File system interface abstraction with implementations for GCP GCS, AWS S3, Azure, SMB, and Local file systems.

Read and write parquet format files

Stream-based library for ingesting and transforming large data files (CSV/JSON) into Elasticsearch indices. Supports ES 8.x and 9.x with cross-version reindexing.

Detect the file type of a Buffer/Uint8Array/ArrayBuffer

Fast TypeScript data management framework built on top of the Data Package standard and Polars DataFrames

Fully asynchronous, microservice/serverless focused, pure JavaScript implementation of common tasks associated with the Parquet file format. Based on ZJONSSON fork of parquetjs (parquetjs-lite)

Jupyterlab extension to browse tabular data files (Parquet, Excel, CSV, TSV) with filtering and sorting capabilities

DuckDB powered by WebAssembly

High-performance WebAssembly library for Apache Arrow, Feather, and Parquet data with zero-copy semantics, LZ4 compression, and comprehensive model-based testing

Agent-friendly BI CLI: query, transform, and inspect tabular data with SQL. Powered by DuckDB.

Unofficial JavaScript/TypeScript client for Overture Maps Foundation data - inspired by overturemaps-py

DuckDB Parquet Viewer - Angular

fully asynchronous, pure JavaScript implementation of the Parquet file format

DevRev fork of DuckDB powered by WebAssembly

DuckDB powered by WebAssembly

Structured time-series data SDK for Uploadbox — ingest, buffer, flush to Parquet on S3, and query with predicate pushdown

SQL query support for parquetlens using DuckDB

Declarative map renderer — drop in a JSON spec, get a full interactive map

Universal Data Pipeline - DuckDB ETL tool with web UI and jq transformations

Local-first data profiling toolkit powered by WebAssembly

WebAssembly Parquet reader and writer.

Detect the file type of a Buffer/Uint8Array/ArrayBuffer

fully asynchronous, pure JavaScript implementation of the Parquet file format

High-performance native DuckDB bindings for React Native using Nitro Modules

fully asynchronous, pure JavaScript implementation of the Parquet file format - updated to allow reading dict and non-dict pages in one file

DuckDB powered by WebAssembly

Convert between JSONSchema and Parquet-MR data formats.

Detect the file type of a file, stream, or data

The analytical database for React Native — OLAP queries, full-text search, vector similarity search, and remote data on iOS and Android with native C++ performance

The TypeScript-first DataFrame library for Node.js

Conversor profesional de archivos a Parquet con streaming, auto-repair y 19 formatos soportados. Procesa archivos de 1GB-20GB sin explotar memoria.

Plugin to export data from the flowcore platform as parquet files

TypeScript SDK for interacting with Oxy data platform

Core client and provider interfaces for querying Arweave data

fully asynchronous, pure JavaScript implementation of the Parquet file format for Google Apps Script

Fully asynchronous, pure JavaScript implementation of the Parquet file format with BigInt.

DuckDB powered by WebAssembly

DuckDB powered by WebAssembly

DuckDB powered by WebAssembly

Timeframes from/to various filetypes

DevRev fork of DuckDB powered by WebAssembly

fully asynchronous, pure JavaScript implementation of the Parquet file format

Analysis Normal Form (ANF) core resources and utilities.

<img src="https://raw.githubusercontent.com/duckdb/duckdb-wasm/main/misc/duckdb_wasm.svg" height="64">

fully asynchronous, pure JavaScript implementation of the Parquet file format

DuckDB powered by WebAssembly

Claude Code / OpenCode skills for RLM (Recursive Language Model)

DuckDB powered by WebAssembly

<img src="https://raw.githubusercontent.com/duckdb/duckdb-wasm/main/misc/duckdb_wasm.svg" height="64">

<img src="https://cdn.jsdelivr.net/npm/duckdb-wasm-es@latest/dist/img/duckdb_wasm.svg" height="64">

Patched DuckDB powered by WebAssembly

CLI tool to export git commits in parquet format

WebAssembly library for Arrow/Feather/Parquet data with zero-copy ownership semantics and LZ4 compression

IceType adapter abstraction layer for schema transformations

Production-ready Node.js package for importing and exporting massive datasets with a Go-based engine

DuckDB powered by WebAssembly

DuckDB powered by WebAssembly

Read and Write DDL using IOPA Data Common Schema

Open Construction Cost Estimation Database — 55,719 work items, 27,672 resources, 9 languages with regional pricing

Parquet file parser for JavaScript

fully asynchronous, pure JavaScript implementation of the Parquet file format

Lightweight TypeScript reader for Delta Lake tables

Read and write parquet format files

fully asynchronous, pure JavaScript implementation of the Parquet file format

Read and Write Parquet files from Node.js

(React compatible) fully asynchronous, pure JavaScript implementation of the Parquet file format

Zero-Dependency Common Iopa Data Schema for database-independence

fully asynchronous, pure JavaScript implementation of the Parquet file format

pg_lake: Distributed Sharding & Unified Iceberg Architecture for PostgreSQL on Cloudflare Workers

Query any database from your terminal. SQLite, Postgres, MySQL, DuckDB, Parquet.

Parquet file parser for JavaScript (dotdo fork)

Send JSON, get Parquet. Zero-dependency SDK for Enrich.sh — the serverless data ingestion pipeline.

Rust calamine library bindings for JavaScript/TypeScript - Excel file reading and Parquet conversion

Detect the file type of a Buffer/Uint8Array/ArrayBuffer. Fork of https://github.com/sindresorhus/file-type allowing custom detectors. May be removed once this feature is merged into the original repo.

DuckDB powered by WebAssembly

Production-ready local observability platform. OpenTelemetry traces & logs with S3 persistence.

React components for DuckDB-Wasm

An advanced Cuckoo Filter with auto-persistence, Parquet & JSON support, and dynamic resizing.

IceType - Type-safe schema language for data lakes and databases

Librería utilitaria para Lambdas AWS: PostgreSQL, MySQL, S3, Parquet

DuckDB powered by WebAssembly

Parquet file writer for JavaScript (dotdo fork with Variant support)

CLI tool to run DataKit locally - a modern web-based data analysis tool

Simple command line tool to read parquet files

CDC to Iceberg streaming for db4 - Change Data Capture and Parquet file generation

To install library:

DuckDB-WASM, customized.

DuckDB powered by WebAssembly, with loadable extensions

Parquet file processing tool with C++ native addon — read, write, append, split and parallel process Parquet files

fully asynchronous, pure JavaScript implementation of the Parquet file format

fully asynchronous, pure JavaScript implementation of the Parquet file format

Delta Lake format implementation - shared foundation for MongoLake and KafkaLake

fully asynchronous, pure JavaScript implementation of the Parquet file format

Native arrow bindings for parquet files

fully asynchronous, pure JavaScript implementation of the Parquet file format

Zero-Dependency Common Iopa Data Schema for database-independence

fully asynchronous, pure JavaScript implementation of the Parquet file format

Intelligent data cleaning CLI with natural language support - Docker-powered Python engine

Parquet file parser for JavaScript made by Hyperparam, forked and modified by Niilo Keinänen

fully asynchronous, pure JavaScript implementation of the Parquet file format

Data loader for the Apache Parquet format.

fully asynchronous, pure JavaScript implementation of the Parquet file format - updated to allow reading dict and non-dict pages in one file

High-performance Qlik QVD file reader/writer — Rust-powered Node.js bindings

CLI tool to export Codex session logs in parquet format