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
rayon
Simple, guaranteed data-race-free work-stealing parallelism for Rust — turn sequential iterators parallel by changing one call.
parking_lot
A faster, smaller drop-in replacement for Rust's standard library Mutex, RwLock, Condvar, and Once.
soupsieve
The pure-Python CSS4 selector engine that powers Beautiful Soup's select() and select_one() methods.
Flume
A safe, blazingly fast multi-producer, multi-consumer channel for Rust
Anime.js
A fast, lightweight JavaScript animation engine for CSS, SVG, DOM attributes, and JS objects.
react-papaparse
React hooks and components wrapping PapaParse for fast in-browser CSV parsing
thread_local
Per-object thread-local storage for Rust, beyond the standard library's static thread_local! macro.
Open Color
An open-source color scheme optimized for UI design, delivered as variables for CSS, Sass, and more.
threads.js
A uniform spawn()/expose() API for offloading work to worker threads and web workers across Node.js, browsers, and Electron.
xhtml2pdf
Pure-Python library that converts HTML5 and CSS into PDF documents using ReportLab, html5lib, and pypdf.
Yappi
A fast tracing Python profiler that is multithreading, asyncio, and gevent aware.
Shuttle
A Rust library for testing concurrent code by controlling and randomizing thread scheduling to reliably surface race conditions.
func_timeout
Run any existing Python function with a hard timeout, plus stoppable-thread support
cssutils
A validating Python library for parsing, building, and serializing CSS Cascading Style Sheets through a DOM Level 2 API.