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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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.
Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
SWC
Rust-based JavaScript/TypeScript compiler, a drop-in super-fast alternative to Babel
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.
openapi-ts
OpenAPI-to-TypeScript code generator producing production-grade SDKs, Zod schemas, and TanStack Query hooks.
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
Open Policy Agent (OPA)
Open source policy engine for unified authorization and compliance decisions across your stack.
npm
The default command-line package manager for Node.js and the JavaScript ecosystem
Peggy
Parser generator for JavaScript using parsing expression grammars (PEG)
gojq
A pure Go implementation of jq for querying and transforming JSON and YAML, usable as a CLI or embedded as a Go library.
eslint-plugin-jsonc
ESLint plugin that applies JavaScript-style linting, auto-fixing, and formatting rules to JSON, JSONC, and JSON5 files.
moon
A Rust-based build system and monorepo orchestrator that manages toolchains, tasks, caching, and CI pipelines across the JavaScript, TypeScript, and polyglot ecosystem.
jsbeautifier
The official Python port of js-beautify for beautifying, unpacking, and deobfuscating JavaScript
memlab
Meta's end-to-end framework for finding JavaScript memory leaks and analyzing heap snapshots
CMake.js
A CMake-based build tool for compiling Node.js native C/C++ addons
rails-erb-loader
A webpack loader that compiles embedded Ruby (.erb) templates into JavaScript for Rails projects.
@elastic/opentelemetry-node
Elastic's zero-code OpenTelemetry distribution for Node.js, giving production apps tracing, metrics, and logs with a single --import flag.
Repomix
Packs an entire repository into a single AI-friendly file, complete with token counts, secret scanning, and an MCP server for direct AI assistant access.
