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

52Health
Library Go

redigo

A print-like Go client for Redis and Valkey with pipelining, pub/sub, connection pooling, and Lua script helpers.

9,847
Apache 2.0
Used by 5
90Health
Library PyPI

hypothesis

Property-based testing for Python that generates edge cases and shrinks failures to their simplest reproducing example.

9,108
MPL-2.0
Used by 5
88Health
Library PyPI

librosa

A Python library for audio and music signal analysis, providing the core DSP building blocks for music information retrieval (MIR) systems.

8,704
Other
Used by 5
89Health
Library Composer

symfony/http-foundation

An object-oriented abstraction over PHP's raw HTTP superglobals — Request, Response, sessions, cookies, and file uploads as typed objects.

8,621
MIT
Used by 5
82Health
Library Composer

symfony/event-dispatcher

Decouple PHP application components with a Mediator/Observer-pattern event dispatcher

8,534
MIT
Used by 5
84Health
Library PyPI

RapidOCR

A fast, offline Python OCR library with pluggable ONNX Runtime, OpenVINO, and PaddlePaddle inference backends.

8,296
Apache 2.0
Used by 5
53Health
Library Composer

Laravel Dompdf

A Laravel service-provider wrapper around Dompdf for generating PDFs from HTML or Blade views.

7,285
MIT
Used by 5
80Health
Library Go

goja

A pure-Go ECMAScript 5.1+ engine for embedding JavaScript execution directly inside Go applications.

7,163
MIT
Used by 5
77Health
Library PyPI

pendulum

A drop-in replacement for Python's datetime with timezone-aware objects by default and a friendlier API.

6,677
MIT
Used by 5
53Health
Library npm

Sandpack React

Composable React components and hooks for building live, in-browser code editing and preview experiences.

6,252
Apache 2.0
Used by 5
41Health
Library Go

copier

Reflection-based Go library for copying values between structs, slices, and maps with tag-driven field control.

6,171
MIT
Used by 5
84Health
Tool npm

Anthropic Sandbox Runtime

Wraps any command in OS-native filesystem and network sandboxing, without requiring a container.

6,043
Apache 2.0
Used by 5
92Health
Library npm

docx

Generate and modify Microsoft Word .docx files with a declarative JS/TS API in Node or the browser.

5,975
MIT
Used by 5
94Health
Library Go

HCL v2

A Go toolkit for parsing, evaluating, and generating HashiCorp's HCL configuration language.

5,823
MPL-2.0
Used by 5
95Health
Tool PyPI

Pylint

A static code analyser for Python that catches bugs and enforces coding standards

5,739
GPL 2.0
Used by 5
87Health
Tool PyPI

Granian

A fast Rust HTTP server for Python that serves ASGI, WSGI, and RSGI applications

5,738
BSD 3
Used by 5
50Health
Library npm

redux-logger

Redux middleware that logs every dispatched action to the console with previous and next state snapshots.

5,713
MIT
Used by 5
91Health
Library Cargo

Hickory Proto

Safe, low-level DNS protocol library underpinning Hickory DNS in Rust

5,464
Other
Used by 5
63Health
Library npm

timeago.js

Nano library for formatting dates as relative '3 hours ago' statements

5,368
MIT
Used by 5
49Health
Library npm

jsondiffpatch

Diff and patch JavaScript objects with compact deltas, smart array diffing, and pluggable output formatters.

5,349
MIT
Used by 5
84Health
Library npm

Piscina

A fast, efficient Node.js worker thread pool for offloading CPU-bound work

5,226
MIT
Used by 5
94Health
SDK Go

confluent-kafka-go

Confluent's official Go client for Apache Kafka, built on librdkafka for production-grade performance and reliability.

5,174
Apache 2.0
Used by 5
92Health
Library Go

Chroma

A general-purpose syntax highlighting library for Go, supporting 200+ languages and multiple output formats out of the box.

5,064
MIT
Used by 5
48Health
Library PyPI

qrcode

Pure-Python QR code image generator with pluggable PIL, SVG, and terminal renderers

4,951
BSD 3
Used by 5

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