Directory

Open Source Packages

Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.

5929 packages

All Packages

74Health
Library npm

dotenv

Loads environment variables from a .env file into process.env for Node.js apps.

20,536
Other
Used by 227
95Health
Library npm

Axios

Promise-based HTTP client for the browser and Node.js with interceptors, automatic transforms, and cancellation

109,212
MIT
Used by 190
86Health
Tool npm

tsx

A drop-in replacement for the node CLI that runs TypeScript and ESM files instantly, powered by esbuild.

12,141
MIT
Used by 177
96Health
Framework npm

Next.js

The React framework for production: file-based routing, server rendering, and Rust-powered builds.

142,310
MIT
Used by 154
94Health
Tool npm

jest

Delightful JavaScript testing with zero-config setup, snapshots, mocking, and coverage

45,457
MIT
Used by 149
52Health
Tool npm

ts-node

TypeScript execution engine and REPL for Node.js that runs .ts files directly, without a separate compile step.

13,124
MIT
Used by 122
83Health
Library npm

ws

A simple, blazing-fast, thoroughly tested WebSocket client and server library for Node.js.

22,804
MIT
Used by 116
95Health
SDK npm

Sentry JavaScript (@sentry/browser)

The official Sentry SDK for capturing errors, performance traces, and session replays in browser JavaScript apps.

8,742
MIT
Used by 110
92Health
Library npm

undici

A fast, spec-compliant HTTP/1.1 client for Node.js, built from scratch with zero runtime dependencies

7,695
MIT
Used by 70
89Health
Library npm

jose

Zero-dependency JWT, JWS, JWE, and JWK toolkit for Node.js, browsers, and edge runtimes.

7,792
MIT
Used by 66
60Health
Library npm

Winston

A battle-tested Node.js logging library with pluggable transports, custom formats, and multiple log levels.

24,520
MIT
Used by 50
75Health
Library npm

qs

A battle-tested querystring parser and serializer for Node.js with nested object support and built-in security limits.

8,940
BSD 3
Used by 49
93Health
Library PyPI

urllib3

A powerful, user-friendly HTTP client for Python with thread-safe connection pooling, TLS verification, and retry handling.

4,058
MIT
Used by 48
68Health
Library npm

proxy-agent

Maps HTTP, HTTPS, SOCKS, and PAC proxy protocols to the correct Node.js http.Agent implementation automatically.

1,161
MIT
Used by 47
92Health
Framework npm

Astro

The web framework for building fast, content-driven websites with islands architecture.

62,548
MIT
Used by 39
75Health
Library npm

turndown

Convert HTML into clean, customizable Markdown in Node.js and the browser.

11,438
MIT
Used by 38
80Health
Library npm

@clack/prompts

Opinionated, ready-to-use interactive prompt components for building beautiful command-line apps in Node.js.

8,051
MIT
Used by 38
92Health
SDK npm

@clickhouse/client

The official TypeScript client for connecting Node.js applications to ClickHouse over HTTP.

331
Apache 2.0
Used by 38
40Health
Library npm

unist-util-visit

Tiny utility to walk unist syntax trees and run a visitor on matching nodes

357
MIT
Used by 36
65Health
Tool npm

openapi-typescript

Generate type-safe TypeScript types directly from your OpenAPI 3.0 and 3.1 schemas.

8,366
MIT
Used by 33
51Health
Library npm

debug

A tiny, zero-config JavaScript debugging utility with namespaced, color-coded output for Node.js and the browser.

11,454
MIT
Used by 32
38Health
Library npm

gray-matter

Fast, dependable front-matter parser for YAML, JSON, TOML, and CoffeeScript metadata blocks

4,490
MIT
Used by 31
95Health
Tool npm

mocha

The classic, battle-tested JavaScript test framework for Node.js and the browser, built around flexible async testing and pluggable reporters.

22,896
MIT
Used by 30
90Health
Library npm

Inquirer.js

Interactive command-line prompts for Node.js — lists, checkboxes, confirms, and more with a single async API.

21,623
MIT
Used by 29

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