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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TypeScript
A strongly typed superset of JavaScript that compiles to clean, portable JavaScript.
ESLint
The pluggable JavaScript and TypeScript linter that finds and fixes code problems through a fully customizable, plugin-based rule engine.
prettier
An opinionated code formatter that enforces consistent style across every language your project speaks.
typescript-eslint
The official meta-package bundling the TypeScript ESLint parser, plugin, and rule presets behind a single typed config() helper.
tsx
A drop-in replacement for the node CLI that runs TypeScript and ESM files instantly, powered by esbuild.
esbuild
An extremely fast JavaScript and CSS bundler and minifier written in Go.
eslint-plugin-react
React-specific linting rules for ESLint that catch JSX bugs, enforce Hooks conventions, and keep prop usage consistent.
eslint-plugin-import
ESLint rules that validate ES module import/export syntax and catch broken paths before they hit your build.
webpack
A static module bundler that builds a dependency graph of your project's modules and packages them into optimized browser bundles
Storybook
The industry-standard workshop for building, documenting, and testing UI components in isolation, across every major frontend framework.
Uvicorn
A lightning-fast ASGI server for Python, built on uvloop and httptools.
Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
css-loader
Resolves CSS @import and url() like JavaScript imports so webpack can bundle stylesheets and their assets.
SWC
Rust-based JavaScript/TypeScript compiler, a drop-in super-fast alternative to Babel
style-loader
A webpack loader that injects bundled CSS into the DOM using style or link tags at runtime.
babel-loader
Babel loader for webpack (and Rspack) that transpiles modern JavaScript with filesystem caching and source map support.
sass-loader
Compiles Sass and SCSS files to CSS inside a webpack build, wiring in Dart Sass or Sass Embedded automatically.
Ruff
An extremely fast Python linter and code formatter, written in Rust, built as a drop-in replacement for Flake8, Black, isort, and dozens of plugins.
npm-run-all
A cross-platform CLI that runs multiple npm-scripts in parallel or in sequence, replacing fragile shell operators like && with Windows-safe orchestration.
TypeScript Native Preview
Preview npm build of tsgo, the native Go port of the TypeScript compiler ahead of TypeScript 7.0.
Gunicorn
A fast, lightweight pre-fork WSGI and ASGI HTTP server for running Python web apps in production on UNIX.
mocha
The classic, battle-tested JavaScript test framework for Node.js and the browser, built around flexible async testing and pluggable reporters.
mypy
Optional static type checker that catches Python bugs before you run your code
Alembic
Database migrations tool for SQLAlchemy with autogenerate and transactional DDL