Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
All Packages
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js-yaml
A fast, complete YAML 1.2 and 1.1 parser and serializer for JavaScript.
yaml
A definitive TypeScript parser and stringifier for YAML, supporting 1.1 and 1.2 with comment and CST access.
url
A WHATWG-standard-compliant URL parser and manipulation library for Rust.
PapaParse
The fastest in-browser CSV parser for JavaScript, with streaming, Web Workers, and zero dependencies
body-parser
Node.js body-parsing middleware that turns raw HTTP request bodies into ready-to-use req.body objects.
fast-xml-parser
Pure-JS XML parser, builder, and validator with no C/C++ bindings and no callbacks
gray-matter
Fast, dependable front-matter parser for YAML, JSON, TOML, and CoffeeScript metadata blocks
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
tomli
A lil' TOML parser for Python — fast, spec-compliant, and dependency-free.
smol-toml
A small, fast, spec-compliant TOML parser and serializer for JavaScript
jsoniter
A high-performance, 100% compatible drop-in replacement for Go's encoding/json.
@xmldom/xmldom
A pure JavaScript, W3C-standard DOMParser and XMLSerializer for parsing and building XML/HTML documents
Partial JSON
Parses incomplete JSON strings streamed token-by-token from an LLM into usable JavaScript values as they arrive.
feedparser
Parses RSS, Atom, RDF, CDF, and JSON feeds into one normalized Python dictionary.
json_repair
Repair malformed JSON from LLMs, APIs, logs, and user input — a drop-in fallback for json.loads().
json-2-csv
Converts arrays of JSON documents to RFC 4180 compliant CSV and back, with native support for nested sub-documents.
quick-xml
A high-performance, near-zero-copy XML pull parser and writer for Rust
csv-parser
A zero-dependency streaming CSV parser for Node.js that converts CSV into JSON at high speed.
toml-node
A zero-dependency, spec-compliant TOML parser for Node.js with BigInt and Temporal support.
quicktype
Generate strongly-typed models and serializers from JSON, Schema, TypeScript, or GraphQL
sqlparser
Extensible SQL lexer and parser for Rust, conforming to ANSI SQL:2011
node-xlsx
TypeScript-first Excel parser and builder for Node.js, built on SheetJS.
xml-js
Converts XML text to JavaScript objects or JSON and back, preserving element order.
