# pypiron > An ultra-fast Python package server, written in Rust. ## Start here - [Home](https://pypiron.com/index.md) - [Setup](https://pypiron.com/guides/setup/index.md) - [Migrate off another index](https://pypiron.com/guides/migrate/index.md) ## Compare - [Choosing a self-hosted PyPI server](https://pypiron.com/compare/index.md) - [pypiron vs devpi](https://pypiron.com/compare/pypiron-vs-devpi/index.md) - [pypiron vs pypiserver](https://pypiron.com/compare/pypiron-vs-pypiserver/index.md) - [pypiron vs Artifactory](https://pypiron.com/compare/pypiron-vs-artifactory/index.md) ## How it works - [How it works](https://pypiron.com/concepts/how-it-works/index.md) - [Supply-chain defense](https://pypiron.com/concepts/supply-chain/index.md) - [Tamper-evident checkpoints](https://pypiron.com/concepts/transparency/index.md) - [Security model](https://pypiron.com/concepts/security-model/index.md) - [How it's tested](https://pypiron.com/concepts/testing/index.md) - [Multi-region resilience](https://pypiron.com/guides/multi-region/index.md) - [Download statistics](https://pypiron.com/concepts/download-stats/index.md) - [For AI agents](https://pypiron.com/for-agents/index.md) ## Reference - [Configuration](https://pypiron.com/reference/configuration/index.md) - [Benchmarks](https://pypiron.com/reference/benchmarks/index.md) - [Privacy](https://pypiron.com/privacy/index.md)