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

Kind2
Library4824 SDK549 Tool342 Framework214
Category2
Utilities Ids Helpers1293 Serialization Data Formats487 UI Component Libraries383 Cli Terminal323 Authentication Authorization289 Cryptography Hashing259 Web Frameworks API Servers246 Build Tools Bundlers227 Image Media Processing213 Cloud Sdks200 Database Drivers Clients200 Async Concurrency Runtimes194
Tags
React667 Python638 Javascript591 Rust485 Typescript408 Hacktoberfest308 PHP304 Nodejs280 Parser224 JSON205 Laravel203 Go192
Sort:Used by Most Apps
Used by Most Apps Health Score Most Stars A-Z
Showing 15 of 5929 packages
Framework Tool Async Concurrency Runtimes Cryptography Hashing Clear all
79Health
Tool npm

concurrently

Run multiple terminal commands in parallel, with color-coded output and cross-platform support.

7,848
MIT
Used by 103
93Health
Framework Cargo

Tokio

The async runtime powering most of Rust's networked, concurrent, and I/O-bound applications.

33,150
MIT
Used by 95
90Health
Tool PyPI

Gunicorn

A fast, lightweight pre-fork WSGI and ASGI HTTP server for running Python web apps in production on UNIX.

10,669
MIT
Used by 33
85Health
Tool npm

dotenvx

A secure, cross-platform dotenv replacement that encrypts .env files and runs any command with decrypted secrets injected — no code changes required.

5,784
BSD 3
Used by 9
69Health
Tool npm

@vitejs/plugin-basic-ssl

A Vite plugin that generates a self-signed certificate so your dev and preview servers can run over HTTPS with zero setup.

516
MIT
Used by 8
88Health
Tool PyPI

Granian

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

5,639
BSD 3
Used by 5
79Health
Tool Composer

Laravel Octane

Boots your Laravel application once and keeps it resident in memory on Swoole, RoadRunner, or FrankenPHP for dramatically faster request handling.

4,040
MIT
Used by 4
95Health
Tool Go

cert-manager

Automates issuing, renewing, and managing TLS certificates for Kubernetes clusters.

14,079
Apache 2.0
Used by 3
92Health
Tool PyPI

Certbot

EFF's command-line tool to obtain and auto-renew free Let's Encrypt TLS certificates

33,232
Apache 2.0
Used by 2
85Health
Framework npm

workflow

Durable, resilient workflow execution for TypeScript, with automatic retries, persistence, and built-in observability.

2,399
Apache 2.0
Used by 2
85Health
Framework Cargo

actix

A Rust actor framework for building concurrent, message-driven systems on top of Tokio.

9,242
Other
Used by 1
91Health
Framework PyPI

Twisted

A mature, event-driven networking engine for Python built around the reactor pattern, with async HTTP, SSH, DNS, IMAP, and IRC protocols built in.

5,979
MIT
Used by 1
56Health
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.

3,739
MIT
Used by 1
75Health
Framework PyPI

taskiq

An async-first distributed task queue for Python with type-safe tasks, pluggable brokers, and first-class FastAPI/AioHTTP integration.

2,333
MIT
Used by 1
78Health
Framework Cargo

containerd-shim

Rust framework for building containerd runtime v2 shims with TTRPC, logging, and event plumbing built in

243
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