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

92Health
Library Go

kin-openapi

A Go library for parsing, validating, converting, and working with OpenAPI 2.0, 3.0, 3.1, and 3.2 documents.

3,311
MIT
Used by 14
41Health
Library npm

idb-keyval

A tiny promise-based key-value store built on IndexedDB for the browser

3,253
Apache 2.0
Used by 14
69Health
Library npm

Ace Builds

Prebuilt Ace code editor bundles for embedding a fast, extensible editor with 100+ language modes in any web app

3,093
BSD 3
Used by 14
76Health
Library npm

elkjs

Automatic graph layout engine for node-link diagrams, ported from the Eclipse Layout Kernel (ELK).

2,845
Other
Used by 14
44Health
Library npm

react-helmet-async

Thread-safe document head management for React 16 through 19, encapsulating title, meta, and link tags per request during server rendering.

2,300
Apache 2.0
Used by 14
57Health
Library npm

LinkeDOM

A fast, triple-linked-list DOM implementation for Node.js and Workers

2,089
Other
Used by 14
43Health
Library Cargo

colored

The simplest way to add ANSI colors and styles to terminal strings in Rust.

2,042
MPL-2.0
Used by 14
87Health
Library npm

Cacheable

High-performance layer 1 / layer 2 caching engine built on Keyv

2,011
MIT
Used by 14
51Health
Library npm

JSON-Patch

Lean, high-performance RFC 6902 JSON Patch and JSON Pointer implementation for applying, generating, validating, and observing diffs between JSON documents.

1,983
MIT
Used by 14
58Health
Library npm

react-tweet

Renders live embedded tweets as React components, with built-in server-component data fetching and a themeable Twitter-style UI.

1,884
MIT
Used by 14
95Health
Library npm

vscode-jsonrpc

A lightweight JSON-RPC messaging library that carries requests, responses, and notifications between a client and a server over streams, sockets, or IPC.

1,796
MIT
Used by 14
50Health
SDK Composer

league/flysystem-aws-s3-v3

The official AWS S3 v3 SDK adapter for PHP Flysystem's unified filesystem API.

1,659
MIT
Used by 14
82Health
SDK PyPI

botocore

The low-level, foundational Python SDK that underpins both boto3 and the AWS CLI

1,647
Apache 2.0
Used by 14
83Health
Library npm

Emoji Picker React

A fully customizable, zero-config emoji picker component for React

1,463
MIT
Used by 14
65Health
Library PyPI

email-validator

Robust email address syntax and deliverability validation for Python

1,454
Other
Used by 14
60Health
Library npm

pretty-bytes

Convert byte counts into human-readable strings like 1337 → 1.34 kB, with binary, bit, and locale-aware formatting options.

1,319
MIT
Used by 14
64Health
Library npm

@apidevtools/swagger-parser

Parses, validates, and dereferences Swagger 2.0 and OpenAPI 3.x specs in Node.js and browsers

1,207
MIT
Used by 14
40Health
Library PyPI

toml

A pure-Python library for parsing and creating TOML documents, validated against the official TOML test suite.

1,138
MIT
Used by 14
95Health
SDK Go

sentry-go

The official Go SDK for capturing errors, panics, and performance traces and sending them to Sentry.

1,108
MIT
Used by 14
67Health
Library npm

dotenv-expand

Expands variable references, command substitution, and encrypted values in dotenv-parsed .env files.

1,057
BSD 3
Used by 14
49Health
Library npm

eslint-config-airbnb-typescript

Airbnb's ESLint config extended with TypeScript support

1,042
MIT
Used by 14
84Health
Library npm

zod-validation-error

Turns raw Zod validation issues into clear, human-readable error messages.

1,021
MIT
Used by 14
45Health
Library npm

chartjs-plugin-datalabels

Highly customizable Chart.js plugin for displaying and styling data labels on any chart type.

922
MIT
Used by 14
57Health
Library Cargo

argon2

A pure-Rust implementation of the Argon2 password hashing function

915
Other
Used by 14

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