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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Cucumber Expressions
A human-readable alternative to regular expressions for matching Gherkin step text
react-csv-reader
A lightweight React component that turns CSV file uploads into parsed data with zero manual FileReader wiring.
rc-switch
Accessible React switch component with controlled and uncontrolled toggle modes.
SQLAlchemy-JSON
Mutation-tracked JSON column types for SQLAlchemy, including deeply nested changes.
tree-sitter-kotlin
A Tree-sitter grammar for Kotlin, validated against JetBrains' own PSI parser and shipped as native bindings for six languages.
python-zstd
Simple, fast Python bindings for Facebook's Zstandard compression library
tld
Extract the top-level domain (TLD), domain, and subdomain from any URL
lkml
A fast, dependency-free Python parser and serializer for Looker's LookML modeling language.
tree-sitter-solidity
A low-dependency Tree-sitter grammar for Solidity, designed for metaprogramming and tooling.
pybase64
Fast Base64 encoding and decoding for Python, powered by a SIMD-accelerated C extension with an automatic pure-Python fallback.
Azure Functions Python Library
The Python programming model for Azure Functions: triggers, bindings, and typed request/response objects.
pyjson5
A fast JSON5 serializer and parser for Python 3, implemented in Cython with a C++ core.
rc-motion
Lifecycle-driven CSSMotion primitives for React enter, leave, and list animations.
React Async Script
A React higher-order component that loads third-party scripts asynchronously, dedupes them across component instances, and forwards refs to the wrapped component.
webcolors
A pure-Python library for converting and normalizing HTML/CSS color names, hex codes, and RGB values
serpapi
The official Python client for SerpApi, returning structured search results from Google, Bing, and more.
html5gum
A WHATWG-spec-compliant HTML5 tokenizer for Rust with pluggable emitters, letting you trade convenience for near-zero-allocation performance.
prisma-ast
Parse, query, and modify Prisma schema files as an AST in JavaScript while preserving comments and formatting.
abstract-level
The common abstract class every Level key-value database implementation extends, with encodings, sublevels, hooks and events built in.
confusable_homoglyphs
Detect dangerous Unicode homoglyphs and mixed-script strings to stop impersonation attacks
h2o2
Proxy handler plugin for hapi.js that forwards requests to an upstream service with fine-grained control.
node-logfmt
A logfmt (key=value) parser, stringifier, and structured logger for Node.js, with Express/restify body-parsing middleware and a CLI.
svix-ksuid
Pure-Python KSUID (K-sortable unique ID) implementation from Svix
acorn-typescript
An Acorn plugin that extends the fast JavaScript parser with TypeScript, JSX/TSX, and decorator syntax.
