Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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PapaParse
The fastest in-browser CSV parser for JavaScript, with streaming, Web Workers, and zero dependencies
csv-parse
A flexible, dependency-free CSV parser for Node.js and the browser with stream, callback, and sync APIs.
csv
Fast, flexible CSV reading and writing for Rust, with Serde support
SheetJS (xlsx-republish)
A drop-in npm mirror of the SheetJS Community Edition for reading and writing spreadsheets.
ExcelJS
Read, manipulate, and write XLSX spreadsheet data, styles, and formulas in JavaScript
msgspec
A fast, zero-cost serialization and validation library for JSON, MessagePack, YAML, and TOML in Python.
officeParser
Parse Office documents into a rich AST and generate Markdown, HTML, PDF, or RAG chunks
json-2-csv
Converts arrays of JSON documents to RFC 4180 compliant CSV and back, with native support for nested sub-documents.
Laravel Excel
Supercharged Excel and CSV exports and imports for Laravel applications
league/csv
CSV data manipulation made easy in PHP
json2csv
Convert JSON arrays into CSV strings and files with configurable fields, formatters, and streaming parsers for Node.js.
csv-parser
A zero-dependency streaming CSV parser for Node.js that converts CSV into JSON at high speed.
msgpackr
Ultra-fast MessagePack serialization for JavaScript with record structures for faster, more compact encoding.
react-papaparse
React hooks and components wrapping PapaParse for fast in-browser CSV parsing
fast-csv
Streaming CSV parser and formatter for Node.js with zero runtime dependencies and full TypeScript support.