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astral-sh/ty

An extremely fast Python type checker and language server, written in Rust.

Python ◇ developer-tools MIT

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★19.8KSTARS

⑂333FORKS

!900ISSUES

🏆#460GLOBAL RANK

🔥6DAYS TRENDING

🚀

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Star History

Continuous Observations

Interactive star growth chart for astral-sh/ty

Momentum

+494

STARS · LAST 30 DAYS

PER DAY

#89

MOST-STARRED Python

Window	7 days	30 days	90 days
Stars gained	+112	+494	+1.4K
Per day	16	16	16
Forks gained	+2	+7	+17

ty gained 494 stars in the last 30 days, about 16 a day, and now has 19.8K. It is about 1 year old and has averaged roughly 19.8K stars a year. It ranks #89 among Python repositories and #460 across all languages on GitHubRepo.

Trending Record

ty has maintained a continuous presence across global trending indexes, peaking at #272. Below is the 30-day activity profile:

💡 Overview

ty is an open-source project written in Python: An extremely fast Python type checker and language server, written in Rust.

Engineered for speed, consistency, and developer ease, it solves common hurdles in Python. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.

⚡ Key Features

Optimized execution pipeline written in Python for predictable speed.

Zero-friction configuration with comprehensive sensible defaults out of the box.

Cross-platform runtime support across Linux, macOS, and Windows environments.

Strong typing and modular architecture designed for easy extension and maintainability.

Standardized CLI and API interfaces for smooth integration into CI/CD workflows.

Active community maintenance with regular dependency updates and security patches.

📥 Installation

terminal

$ pip install ty

$ pip install ty # or: brew install ty

> pip install ty

⚙ System Requirements

Platforms

• macOS
• Linux
• Windows

Runtime & Dependencies

Python >= 3.9, pip, virtualenv

Architecture

x86_64, ARM64 (Apple Silicon & Graviton)

🧠 How It Works

ty coordinates its core functionality through a modular Python pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.

🎯 Production Use Cases

Production System Integration

Embed ty into Python backend services to handle core application logic.

CI/CD Automated Pipelines

Run automated validation, builds, and integration suites during deployments.

Developer Tooling & Workflows

Accelerate developer onboarding with pre-configured project utilities.

Open Source Extension

Fork and customize internal modules under the repository's open MIT license.

🚀 Getting Started

Install ty using your package manager: `pip install ty`

Initialize your project workspace or configuration file for ty.

Import ty into your codebase or invoke it directly from your terminal.

Execute your test suite or run `ty --help` to verify successful setup.

👍 Strengths

Active community backing with 19,739 GitHub stars and verified adoption.

Permissive open-source distribution under the MIT license.

Built in Python for high execution speed and developer familiarity.

Cross-platform compatibility across modern Linux, macOS, and Windows environments.

Clean modular design allowing flexible configuration and pipeline integration.

⚠️ Considerations

Requires familiarity with Python and modern CLI workflows.

Ecosystem extensions may require manual configuration depending on environment constraints.

Active development roadmap means breaking API changes may occur across major versions.

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👥 Who Should Use This

Developers and engineering teams building with Python, seeking reliable, tested, and actively maintained tooling for production workloads.

🏆 Nearby in the Rankings

astral-sh/ty is currently ranked #460 by stars across every repository tracked on GitHubRepo. These are adjacent projects:

Rank	Repository	Language	Stars	Action
#455	nvim-telescope/telescope.nvim	Lua	★ 19.8K	Compare ↗
#456	catppuccin/catppuccin	TypeScript	★ 19.8K	Compare ↗
#457	resend/react-email	TypeScript	★ 19.8K	Compare ↗
#458	videolan/vlc	C	★ 19.8K	Compare ↗
#459	trojan-gfw/trojan	C++	★ 19.8K	Compare ↗
#460	astral-sh/ty This Project	Python	★ 19.8K
#461	realm/SwiftLint	Swift	★ 19.8K	Compare ↗
#462	dzhng/deep-research	TypeScript	★ 19.7K	Compare ↗
#463	SnapDrop/snapdrop	JavaScript	★ 19.7K	Compare ↗
#464	RunaCapital/awesome-oss-alternatives	Python	★ 19.7K	Compare ↗
#465	rocksdanister/lively	C#	★ 19.7K	Compare ↗

Frequently Asked Questions

What does ty do? +

An extremely fast Python type checker and language server, written in Rust.

What language is ty written in? +

The primary language is Python. Topics include: software.

Is ty actively maintained? +

Yes, the last recorded push was on Sep 24, 2026 with 900 open issues being tracked.

How many stars does ty have? +

ty has 19,759 stars and 333 forks on GitHub.

How does ty rank among GitHub repositories? +

With 19,759 stars, astral-sh/ty is ranked #460 globally across all repositories tracked on GitHubRepo and #89 among Python projects.

What license is ty distributed under? +

The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.

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LinkedIn

Why ty is replacing paid subscriptions for engineering teams

Stop paying $50+/month for locked SaaS tools.

Over 19,759 developers have starred astral-sh/ty, an impressive Python open-source project designed to An extremely fast Python type checker and language server, written in Rust.

Key Engineering Advantages:
• 100% Local-First: Complete data privacy with zero tracking or telemetry.
• Zero Subscription Costs: No paywalls, per-seat fees, or API markups.
• Complete Customization: Native open-source architecture you can fork, inspect, and deploy anywhere.
• Proven Adoption: 19,759 GitHub stars and 333 forks.

If you're looking to streamline your engineering workflows without ballooning software expenses, this is worth checking out.

👉 Full star velocity and architectural report: https://githubrepo.cloud/repo/astral-sh/ty
⭐ GitHub Repository: https://github.com/astral-sh/ty

#OpenSource #SoftwareEngineering #DeveloperTools #Tech #Programming #Python

🤖

Reddit (r/opensource, r/webdev, r/selfhosted)

Show r/opensource: ty – A free, self-hosted tool that lets you An extremely fast Python type checker and language server, written in Rust

Hey everyone,

I wanted to share an interesting open-source project called **ty** (https://github.com/astral-sh/ty) that has been picking up heavy momentum lately (19,759 stars).

### What problem does it solve?
Many existing tools in this domain require expensive cloud plans or store your data on third-party servers. ty was built with a local-first philosophy, allowing developers to An extremely fast Python type checker and language server, written in Rust without recurring subscription costs or privacy compromises.

### Tech Stack & Details:
- **Language:** Python
- **License:** MIT
- **GitHub:** [astral-sh/ty](https://github.com/astral-sh/ty)
- **Live Star Momentum Tracker:** [https://githubrepo.cloud/repo/astral-sh/ty](https://githubrepo.cloud/repo/astral-sh/ty)

Has anyone here tested this in production or integrated it into existing pipelines? Would love to hear your experience and feedback!

🟧

Hacker News (Show HN)

Show HN: ty – An extremely fast Python type checker and language server, written ...

Hi HN,

ty is an open-source Python project designed to An extremely fast Python type checker and language server, written in Rust.

Rather than relying on closed cloud endpoints, it executes locally on your own machine, providing predictable latency, total privacy, and full control.

Repository: https://github.com/astral-sh/ty
Documentation & Metrics: https://githubrepo.cloud/repo/astral-sh/ty

Feedback and PRs are welcome.

✍️

Dev.to / Hashnode Tags: opensource, python, devtools, webdev

This GitHub repo replaces a $50 a month tool! Stop paying expensive software subscriptions. Meet ty (19,759 GitHub Stars)

---
title: This GitHub repo replaces a $50 a month tool! Stop paying expensive software subscriptions. Meet ty
published: true
tags: opensource, python, devtools, programming
---

## Stop Paying Software Subscriptions For This

Finding high-quality, production-ready open source alternatives to expensive proprietary software can save engineering teams thousands of dollars every year.

Today, we're looking at **[astral-sh/ty](https://github.com/astral-sh/ty)**, a rapidly rising repository with **19,759 GitHub stars** and **333 forks**.

### What is ty?

> An extremely fast Python type checker and language server, written in Rust

Written in **Python**, ty runs directly on your local workstation or private server, keeping your data secure and eliminating recurring license fees.

### Key Highlights
- **High Performance:** Lightweight, reliable, and built in Python.
- **Privacy & Security:** Complete ownership of your environment and data.
- **Growing Momentum:** Ranked **#460** globally across tracked repositories on [GitHubRepo](https://githubrepo.cloud/repo/astral-sh/ty).

### Quick Start
To get started locally:

```bash
git clone https://github.com/astral-sh/ty.git
cd ty
```

Check out the full repository and star history analytics here:
- **GitHub:** [astral-sh/ty](https://github.com/astral-sh/ty)
- **Star Velocity Tracker:** [ty on GitHubRepo.cloud](https://githubrepo.cloud/repo/astral-sh/ty)

𝕏

X / Twitter Communities

Thread / Community Post for ty

Developers are sleeping on this GitHub repo 👇

astral-sh/ty (19,759 ⭐) replaces expensive monthly software subscriptions with 100% free open source code.

⚡ What it does: An extremely fast Python type checker and language server, written in Rust
💻 Built with: Python
🔒 100% local execution & privacy

Check live star velocity and benchmarks:
https://githubrepo.cloud/repo/astral-sh/ty

#opensource #developer #coding #tech #programming

🧵

Threads Topics

Topic Discussion: Open Source & Developer Tools

This GitHub repo replaces a $50/month tool! 🚀

If you want to save hours of manual work and stop paying subscriptions, check out astral-sh/ty.

It already has over 19,759 stars and lets you An extremely fast Python type checker and language server, written in Rust.

Drop a comment if you've tried it, or check the full star momentum report:
https://githubrepo.cloud/repo/astral-sh/ty

From our network

astral-sh/ty

Star History

Momentum

Trending Record

💡 Overview

⚡ Key Features

📥 Installation

⚙ System Requirements

Platforms

Runtime & Dependencies

Architecture

🧠 How It Works

🎯 Production Use Cases

Production System Integration

CI/CD Automated Pipelines

Developer Tooling & Workflows

Open Source Extension

🚀 Getting Started

👍 Strengths

⚠️ Considerations

⇄ Alternatives & Direct Competitors

👥 Who Should Use This

🏆 Nearby in the Rankings

Frequently Asked Questions

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