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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rust-plist
A Rust library for reading and writing Apple property list (plist) files in XML, binary, and ASCII formats, with full Serde support.
style-to-object
Parses CSS inline style strings into plain JavaScript objects, powering markdown-to-jsx, react-markdown, and dozens of other rendering pipelines.
dateparser
A Rust library that parses dates from dozens of common string formats into chrono UTC datetimes with no configuration.
prometheus-parse
A simple, dependency-light Rust parser for the Prometheus exposition text format.
tree-sitter-kotlin-ng
Fast, incremental Kotlin grammar for the Tree-sitter parsing framework.
@posthog/hogql-parser
WebAssembly build of PostHog's ANTLR4 HogQL/Hog grammar, returning JSON ASTs to any JavaScript or TypeScript runtime.
@openuidev/lang-core
The framework-agnostic parser, prompt generator, and runtime evaluator behind OpenUI Lang, the DSL that lets LLMs stream typed UI trees.
lightGallery
A modular, responsive lightbox gallery plugin for images and video, with official React, Vue, and Angular wrappers.
pdfminer.six
A pure-Python library for extracting text, layout, and metadata directly from PDF documents.
remarkable
A fast, CommonMark-compliant Markdown parser for JavaScript with a pluggable, rule-based rendering pipeline.
pest
The elegant general-purpose Rust parser built on parsing expression grammars (PEG)
RON
A readable, Rust-like data serialization format built on Serde
calamine
Read and deserialize Excel and OpenDocument spreadsheets in pure Rust.
Parsimonious
A fast, pure-Python parsing expression grammar (PEG) parser library.
PHP CSS Parser
A pure-PHP parser that turns CSS files into an editable object tree and back into optimized stylesheets.
@messageformat/parser
An AST parser for ICU MessageFormat strings, turning plural, select, and argument syntax into a typed token tree.
jsts
JavaScript port of the Java JTS Topology Suite for spatial predicates, geometry operations, and OGC Simple Features processing.
termimad
Rust library for rendering Markdown text, tables, and templates in terminal applications with fully customizable, skinnable styling.
rama-core
The async Service and Layer trait core that every Rama network stack builds on.
Behat Gherkin
A PHP parser for the Gherkin BDD language with support for 40+ natural languages.
multipart-parser
A fast, zero-dependency streaming multipart parser that works in Node, Bun, Deno, Cloudflare Workers, and the browser.
@loaders.gl/core
The core API for loaders.gl, a framework-independent toolkit for loading and parsing big-data, 3D, and geospatial formats.
Parsedown Extra
Markdown Extra syntax support on top of Parsedown for PHP.
command-line-args
A mature, feature-complete Node.js library for parsing command-line options into a plain object.
