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

93Health
Tool npm

Vitest

A blazing-fast unit testing framework powered by Vite, with Jest-compatible APIs out of the box.

17,166
MIT
Used by 296
92Health
Framework npm

Playwright

Cross-browser end-to-end web testing and browser automation with a single API for Chromium, Firefox, and WebKit.

96,772
Apache 2.0
Used by 229
95Health
Tool npm

jest

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

45,465
MIT
Used by 149
75Health
Library Go

testify

The essential Go toolkit for assertions, mocks, and structured test suites.

26,217
MIT
Used by 102
96Health
Framework PyPI

pytest

The Python testing framework that makes writing small tests easy and scales to complex functional test suites.

14,543
MIT
Used by 100
54Health
Framework Go

Cobra

The commander library that powers Kubernetes, Hugo, and GitHub CLI's command-line interfaces.

44,650
Apache 2.0
Used by 62
65Health
Library Go

jwt

A zero-dependency Go implementation of JSON Web Tokens (JWT) with pluggable HMAC, RSA, RSA-PSS, ECDSA, and Ed25519 signing methods.

9,230
MIT
Used by 62
95Health
SDK Go

AWS SDK for Go v2

The official AWS SDK for Go — type-safe, modular clients for every AWS service.

3,658
Apache 2.0
Used by 44
51Health
Library Go

websocket

A fast, RFC 6455-compliant WebSocket implementation for Go with full control over framing, compression, and concurrency.

24,878
Other
Used by 39
93Health
Tool npm

Cypress

Fast, easy, and reliable end-to-end and component testing for anything that runs in a browser.

51,026
MIT
Used by 38
83Health
Library Go

Logrus

Structured, pluggable logging for Go with a stdlib-compatible API and level-based hooks.

25,755
MIT
Used by 36
49Health
Library Go

mux

A lightweight, http.Handler-compatible Go router that matches requests by path, host, method, headers, and query, and can reverse them back into URLs.

21,838
BSD 3
Used by 35
91Health
Library Go

go-redis

The official, idiomatic Go client for Redis — connection pooling, Cluster, Sentinel, pipelines, and client-side caching built in.

22,255
Other
Used by 34
82Health
Library Go

Go-MySQL-Driver

A pure Go implementation of the MySQL wire protocol, used as the database/sql driver for MySQL, MariaDB, and TiDB.

15,285
MPL-2.0
Used by 33
94Health
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
66Health
Library Go

color

Colorized terminal output for Go with ANSI escape codes, 24-bit RGB, and built-in Windows support.

8,002
MIT
Used by 29
48Health
Library Go

go-cmp

A safer, more powerful alternative to reflect.DeepEqual for comparing Go values in tests.

4,678
BSD 3
Used by 29
52Health
Library Go

godotenv

A Go port of Ruby's dotenv that loads environment variables from .env files into your process, with zero third-party dependencies.

10,643
MIT
Used by 27
85Health
Library npm

Chai

BDD/TDD assertion library for Node.js and the browser, framework-agnostic

8,268
MIT
Used by 27
91Health
Library Go

compress

A Go compression toolkit with a pure-Go Zstandard codec, S2 (a faster Snappy), and assembly-accelerated drop-in replacements for gzip, zip, zlib, and lzw.

5,650
BSD 3
Used by 27
95Health
SDK Go

go-github

A comprehensive Go client library for the GitHub REST API, covering everything from repos and issues to Actions, Apps, and enterprise admin endpoints.

11,309
BSD 3
Used by 23
77Health
Framework Go

Gin

A high-performance HTTP web framework for Go, built on a zero-allocation radix-tree router with an Express.js-style API.

89,268
MIT
Used by 22
81Health
Library Go

chi

A lightweight, idiomatic Go HTTP router built entirely on net/http, for composing middleware and mounting REST APIs without a framework.

22,891
MIT
Used by 22
92Health
Library Go

gopsutil

A Go library that ports Python's psutil, giving programs a pure-Go way to read CPU, memory, disk, network, host, sensor, and process statistics across every major OS.

11,929
BSD 3
Used by 22

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