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

87Health
Library PyPI

fastembed

Lightweight, ONNX-powered Python library for fast text, image, and sparse embedding generation.

3,262
Apache 2.0
Used by 3
41Health
Library npm

platform.js

A dependency-free JavaScript library that parses user-agent strings to identify browser, OS, device, and layout engine across almost any runtime.

3,240
MIT
Used by 3
49Health
Library npm

react-custom-scrollbars

A React scrollbar component that keeps native browser scrolling while letting you style the track and thumb

3,215
MIT
Used by 3
70Health
Library Composer

Symfony Asset

Symfony component that generates and versions URLs for CSS, JavaScript, and image assets

3,147
MIT
Used by 3
83Health
Library npm

Takumi

Rust rendering engine that turns JSX, HTML, and node trees into images without a headless browser

3,143
Apache 2.0
Used by 3
79Health
Library Go

paho.mqtt.golang

The Eclipse Paho MQTT v3.1/3.1.1 client library for Go, built for fully asynchronous pub/sub messaging.

3,132
Other
Used by 3
47Health
Library npm

EasyMDE

An embeddable, drop-in JavaScript Markdown editor with a customizable toolbar, live syntax styling, autosaving, and built-in spell checking.

3,090
MIT
Used by 3
75Health
Library PyPI

DDGS

A Python metasearch library that aggregates text, image, video, news, and book results from ten-plus web search backends through one unified API.

3,029
MIT
Used by 3
41Health
Library Go

go-qrcode

Pure Go library for encoding QR Codes as PNG images or ASCII art, with zero external dependencies.

3,018
MIT
Used by 3
82Health
Library npm

react-native-view-shot

Capture any React Native view and turn it into a PNG, JPG, WebP, or raw image, with native support for iOS, Android, and Windows.

2,953
MIT
Used by 3
55Health
Library npm

boom

HTTP-friendly error objects for building consistent, well-formed API error responses in Node.js.

2,922
BSD 3
Used by 3
38Health
Library PyPI

python-diskcache

Pure-Python disk and file-backed cache that's faster than Memcached and Redis, with a Django-compatible dict-like API.

2,915
Apache 2.0
Used by 3
82Health
Library npm

React Native DateTimePicker

Native date and time picker component for iOS, Android, and Windows in React Native.

2,914
MIT
Used by 3
69Health
Library PyPI

python-readability

Fast Python library that extracts the main article text and title from cluttered HTML pages.

2,894
Apache 2.0
Used by 3
66Health
Library Go

gse

A Go library for multilingual text segmentation with dictionary, DAG, and HMM cutting modes for Chinese, Japanese, and English.

2,844
Apache 2.0
Used by 3
85Health
Library Composer

Symfony ExpressionLanguage

Symfony component that compiles and evaluates one-line expressions with custom functions and variables

2,840
MIT
Used by 3
78Health
Library Composer

Symfony PropertyAccess

Read and write nested object or array properties using a simple string notation

2,815
MIT
Used by 3
88Health
Library Cargo

MiniJinja

A powerful, minimal-dependency template engine for Rust that implements a large subset of the Jinja2/Django templating language.

2,810
Apache 2.0
Used by 3
55Health
Library npm

emoji-datasource-apple

Apple's official emoji spritesheets and matching JSON metadata, packaged as an installable npm module for building emoji pickers and chat UIs.

2,798
MIT
Used by 3
55Health
Framework Composer

FOSRestBundle

Symfony bundle that turns controllers into format-agnostic REST endpoints with content negotiation and view layer

2,793
MIT
Used by 3
57Health
Library Composer

PHP-DI

A PSR-11 dependency injection container for PHP that autowires your classes

2,772
MIT
Used by 3
48Health
Library npm

react-paginate

A lightweight, accessible ReactJS component for rendering customizable pagination controls.

2,764
MIT
Used by 3
88Health
Library Composer

Symfony Form

Symfony component for building, validating, and rendering reusable HTML forms bound to typed data

2,762
MIT
Used by 3
79Health
Library Go

Otter

A high-performance, adaptive W-TinyLFU in-memory cache for Go with size, weight, and time-based eviction.

2,702
Apache 2.0
Used by 3

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers