Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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Nodemailer
The zero-dependency Node.js library for sending email over SMTP, SES, sendmail, and more.
FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
React Email
High-quality, unstyled React components for building responsive HTML emails
rich
A Python library for rendering rich text, tables, progress bars, and syntax-highlighted code in the terminal.
Ruff
An extremely fast Python linter and code formatter, written in Rust, built as a drop-in replacement for Flake8, Black, isort, and dozens of plugins.
Prisma Client
Auto-generated, type-safe database client for Node.js and TypeScript.
websockets
Build correct, fast WebSocket servers and clients in Python with asyncio, threading, or Sans-I/O APIs.
Typer
Typer is a Python library for building CLI applications, using type hints to generate arguments, options, validation, help text, and shell completion automatically.
html-to-text
Advanced HTML to plain text converter with word wrapping, tables, and customizable selectors
Celery
Distributed task queue for running asynchronous jobs, scheduled work, and complex workflows across Python applications at scale.
email-validator
Robust email address syntax and deliverability validation for Python
@sendgrid/mail
Official Node.js SDK for sending transactional and marketing email through the Twilio SendGrid API.
GSAP
The industry-standard JavaScript animation library for tweening CSS, SVG, canvas, and UI with rock-solid cross-browser reliability.
linkifyjs
A fast, plugin-extensible library that finds URLs, email addresses, hashtags, and mentions in plain text and converts them into HTML links.
go-mail
A modern, idiomatic Go library for composing and sending email over SMTP with a minimal dependency footprint.
PHPMailer
The classic full-featured email creation and sending library for PHP
isort
Automatically sorts and organizes Python import statements
Markdown
The reference Python implementation of John Gruber's Markdown, with a pluggable extension system for converting text to HTML.
flake8
The CLI linter that wraps PyFlakes, pycodestyle, and McCabe complexity checks into a single Python style and error checker.
msgraph-sdk-javascript
Official Microsoft Graph JavaScript SDK for calling the Graph API from Node.js and the browser.
gridstack.js
A dependency-free TypeScript library for building draggable, resizable, responsive dashboard grid layouts in the browser.
ImapFlow
A modern, promise-based IMAP client for Node.js with automatic extension handling and built-in mailbox locking.
OAuthLib
Generic, spec-compliant OAuth1, OAuth2, and OpenID Connect implementation for Python
Resend Python SDK
Official Python SDK for sending transactional email with the Resend API
