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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whatlang
Fast, lightweight natural language and script detection for Rust
ojg
A high-performance JSON parser and toolkit for Go with a full JSONPath implementation.
libopenapi
A high-performance Go library for parsing, validating, mutating, bundling, and diffing OpenAPI 3.2/3.1/3.0, Swagger, Overlay, and Arazzo documents.
httparse
A tiny, safe, zero-copy push parser for the HTTP/1.x protocol in Rust
tree-sitter-md
Fast, incremental Markdown grammar for the Tree-sitter parsing framework.
astroid
A Python AST library with static type and value inference, powering pylint
argparse
A faithful JS port of Python's argparse — sub-commands, auto-generated help, and typed CLI arguments for Node.js.
react-papaparse
React hooks and components wrapping PapaParse for fast in-browser CSV parsing
tree-sitter-ruby
The official Ruby grammar for the tree-sitter incremental parsing library
tree-sitter-json
Fast, incremental JSON grammar for the Tree-sitter parsing framework.
comment-json
Parse and stringify JSON with comments, preserving them exactly through modification and re-save.
postcss-value-parser
Transforms CSS declaration values and at-rule params into a traversable node tree.
xml-formatter
Pretty-print and minify XML strings in JavaScript/TypeScript, respecting xml:space
sns-payload-validator
Verifies AWS SNS message signatures for HTTP/S and Lambda payloads.
esprima
A high-performance, standard-compliant ECMAScript parser producing ESTree-compatible ASTs for JavaScript tooling.
PdfParser
Standalone PHP library to extract text, metadata, and data from PDF files with no external tools.
lol-html
A low-latency streaming HTML parser and rewriter for Rust with a CSS-selector-based API.
fast-csv
Streaming CSV parser and formatter for Node.js with zero runtime dependencies and full TypeScript support.
xstrings
A zero-dependency Go package that ports common string functions from Python, Ruby, PHP, and Perl into idiomatic, UTF-8-safe Go.
Clipanion
A type-safe, dependency-free CLI framework for building nested, typed command-line applications in TypeScript.
ngx-markdown
Angular library for parsing and rendering Markdown as sanitized HTML, with optional syntax highlighting, math, diagrams, emoji, and copy-to-clipboard support.
leven
Fast, dependency-free Levenshtein distance calculation for comparing and matching strings in JavaScript.
plist.js
Parses and builds Apple property lists in XML, binary, and OpenStep formats for Node.js and browsers.
PHP User Agent Parser
Lightning-fast, minimalist PHP parser that turns User-Agent strings into browser and platform.
