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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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.
set-cookie-parser
Parse raw Set-Cookie header values into structured JavaScript cookie objects
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.
gock
Versatile HTTP traffic mocking for Go, intercepting any net/http-based client for deterministic tests.
xml-js
Converts XML text to JavaScript objects or JSON and back, preserving element order.
Peggy
Parser generator for JavaScript using parsing expression grammars (PEG)
@neondatabase/serverless
Neon's serverless PostgreSQL driver for JavaScript and TypeScript, built for edge and serverless runtimes using HTTP and WebSockets instead of raw TCP.
yargs-parser
The mighty, standalone option parser powering yargs
error-stack-parser
Cross-browser JavaScript library that parses Error objects into structured stack frames with function names, file paths, and line/column numbers.
tree-sitter-c-sharp
C# grammar for tree-sitter, based on the Roslyn language grammar
x509-parser
A pure-Rust, zero-copy X.509 certificate parser (RFC 5280) built on the nom parser-combinator framework, with optional signature verification.
tinycss2
Low-level CSS Syntax Level 3 parser and generator for Python
lark
A modern parsing toolkit for Python supporting Earley, LALR(1), and CYK parsers with automatic tree construction.
jsonparser
A fast, allocation-free JSON parser for Go that reads values by key path without unmarshaling into structs.
Device Detector
Universal PHP library for parsing user agents into browsers, OS, and device info
snarkdown
A dead-simple, dependency-free Markdown-to-HTML parser that weighs about 1kb gzipped.
url-parse
Small, dependency-light URL parser that works identically in Node.js and the browser.
MyST Parser
An extended CommonMark-compliant Markdown parser with first-class bridges to docutils and Sphinx.
Griffe
Extract signatures and structure from entire Python programs for API docs and breaking-change detection.
slog-multi
Compose Go's log/slog handlers into fanout, routing, failover, and load-balancing pipelines.
url-pattern
A tiny, dependency-free library for matching and generating URL-like string patterns without regex.
go-shellwords
A Go library that splits shell-style command-line strings into argument slices, honoring POSIX quoting, escaping, and substitution rules.
