totaltechgeek/deejay-file-query

fully asynchronous, pure JavaScript implementation of the Parquet file format

rawStream.pipe(JSONStream.parse()).pipe(streamOfObjects)

the complete solution for node.js command-line programs

Validate XML, Parse XML, Build XML without C/C++ based libraries

Reactive Extensions for modern JavaScript

stream-json is the micro-library of Node.js stream components for creating custom JSON processing pipelines with a minimal memory footprint. It can parse JSON files far exceeding available memory streaming individual primitives using a SAX-inspired API. Includes utilities to stream JSON database dumps.

Avro for JavaScript

CSV parser and writer

NodeJS Excel files parser & builder