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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SWC
Rust-based JavaScript/TypeScript compiler, a drop-in super-fast alternative to Babel
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.
mocha
The classic, battle-tested JavaScript test framework for Node.js and the browser, built around flexible async testing and pluggable reporters.
svgo
A Node.js library and command-line tool that optimizes SVG files by removing redundant markup through a configurable plugin pipeline.
nest-cli
Scaffolds, builds, and serves NestJS applications through schematics-driven code generation and pluggable compiler backends.
sentry-cli
Official command-line tool for uploading source maps, debug symbols, and managing releases and deploys in Sentry.
Rspack CLI
The official command-line interface for running Rspack builds, dev servers, and previews.
wasm-bindgen
Rust-JavaScript interop toolchain that generates the glue code needed to compile Rust to WebAssembly and call it from JS
js-beautify
Reformats and re-indents JavaScript, HTML, and CSS into clean, readable code
jest-junit
A Jest reporter that converts test results into JUnit-compatible XML for CI dashboards and test-analytics tools.
verdaccio
A lightweight, zero-config-required private npm registry with built-in caching and proxying of public registries.
quicktype
Generate strongly-typed models and serializers from JSON, Schema, TypeScript, or GraphQL
npm
The default command-line package manager for Node.js and the JavaScript ecosystem
Granian
A fast Rust HTTP server for Python that serves ASGI, WSGI, and RSGI applications
fallow
Rust-native static analysis for TypeScript and JavaScript that finds dead code, duplication, cycles, and architecture drift with no compiler or AI in the loop.
Deno
Secure-by-default JavaScript and TypeScript runtime built in Rust on V8
ty
An extremely fast Python type checker and language server written in Rust.
flutter_rust_bridge
A feature-rich yet seamless Flutter/Dart to Rust binding generator for calling native Rust from Dart.
moon
A Rust-based build system and monorepo orchestrator that manages toolchains, tasks, caching, and CI pipelines across the JavaScript, TypeScript, and polyglot ecosystem.
jemalloc_pprof
Convert jemalloc heap profiles to pprof format for memory leak and OOM debugging
ast-grep
Fast CLI for structural code search, linting, and rewriting by AST pattern.
jsbeautifier
The official Python port of js-beautify for beautifying, unpacking, and deobfuscating JavaScript
skim
A fast, interactive fuzzy finder for the command line, written in Rust — a smarter alternative to grep.
memlab
Meta's end-to-end framework for finding JavaScript memory leaks and analyzing heap snapshots
