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

45Health
Library PyPI

Databases

Simple asyncio support for PostgreSQL, MySQL, and SQLite, with queries built using SQLAlchemy Core.

3,985
BSD 3
Used by 1
87Health
Library PyPI

django-guardian

Per-object (row-level) permissions for the Django authorization system.

3,920
Other
Used by 1
49Health
Library Composer

php-encryption

Misuse-resistant authenticated encryption for PHP, with a simple key- or password-based API

3,878
MIT
Used by 1
93Health
Library PyPI

Kiota Authentication Azure

Azure Identity-backed authentication provider for Python API clients generated by Microsoft Kiota.

3,833
MIT
Used by 1
53Health
Library Go

html-to-markdown

A robust Go library and CLI that converts HTML (even entire websites) into clean, readable Markdown, extensible through a priority-based plugin system.

3,827
MIT
Used by 1
52Health
Library Composer

Laravel Nested Set

Effective tree structures for Laravel Eloquent using the Nested Set Model

3,804
MIT
Used by 1
53Health
Framework Cargo

tarpc

An async Rust RPC framework that defines services directly in code via a macro instead of a separate IDL, with pluggable transports and deadline propagation.

3,744
MIT
Used by 1
92Health
Library PyPI

django-unfold

Modern Tailwind-based theme and tooling for the Django admin to build internal apps.

3,718
MIT
Used by 1
78Health
Library npm

@dbml/core

The parsing and code-generation engine behind DBML — converts human-readable schema definitions into SQL DDL, JSON, and back again across five database dialects.

3,715
Apache 2.0
Used by 1
49Health
Library npm

react-native-progress

Animated progress bars, circles, and pies for React Native, built on React Native SVG.

3,665
MIT
Used by 1
51Health
Library npm

Micromodal

Tiny, dependency-free JavaScript library for accessible, WAI-ARIA compliant modal dialogs.

3,658
MIT
Used by 1
92Health
Library npm

vis-network

A browser-based library for rendering dynamic, physics-driven network diagrams of nodes and edges.

3,631
Apache 2.0
Used by 1
79Health
Library PyPI

Furo

A clean, minimal, and customizable Sphinx documentation theme

3,616
MIT
Used by 1
90Health
Library Cargo

taffy

A flexible, high-performance Rust layout engine implementing CSS Flexbox, Grid, and Block algorithms.

3,616
MIT
Used by 1
68Health
Library Cargo

iced-x86

Blazing-fast, correct x86/x64 disassembler, assembler, decoder, and encoder written in pure Rust.

3,583
MIT
Used by 1
55Health
Library PyPI

pySerial

A cross-platform Python library that exposes a single, uniform class-based API for reading, writing, and configuring serial ports on Windows, macOS, Linux, and BSD.

3,578
BSD 3
Used by 1
82Health
Library PyPI

drf-yasg

Generate real Swagger/OpenAPI 2.0 schemas from Django REST Framework

3,544
BSD 3
Used by 1
53Health
Library PyPI

TensorFlow Hub

A Python library for downloading and reusing pretrained TensorFlow SavedModels for transfer learning with a minimum amount of code.

3,530
Apache 2.0
Used by 1
90Health
Library npm

OpenSeadragon

Open-source JavaScript viewer for high-resolution, deeply zoomable images on desktop and mobile.

3,518
BSD 3
Used by 1
73Health
Library PyPI

Funcy

A fancy and practical collection of functional programming tools for Python, from collection walking to control-flow decorators.

3,510
BSD 3
Used by 1
81Health
Library PyPI

Optimum

Hugging Face's optimization toolkit for accelerating training and inference of Transformers, Diffusers, TIMM, and Sentence-Transformers.

3,501
Apache 2.0
Used by 1
42Health
Library npm

AutoForm Core

The schema-agnostic engine that powers AutoForm's field parsing, validation, and defaults.

3,493
MIT
Used by 1
55Health
Library npm

react-native-keychain

Secure, cross-platform credential storage for React Native apps using native Keychain and Keystore.

3,482
MIT
Used by 1
87Health
Library Cargo

slatedb

A cloud-native embedded LSM-tree storage engine that writes directly to S3 and other object storage for bottomless, durable, replicated key-value storage.

3,479
Apache 2.0
Used by 1

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