# Charmhub

> Charmhub is the home of the Open Operator Collection: charms and bundles, the software operators that Juju uses to deploy, integrate and manage applications on Kubernetes, cloud and VM environments. Publishers use charmhub.io to register names, publish and manage their charms.

## Main pages

- [Contact us](https://charmhub.io/contact-us.md): Canonical publishes Ubuntu, provides commercial services and solutions for Ubuntu, and works with hardware manufacturers, software vendors and public clouds to certify Ubuntu.
- [Interface catalogue](https://charmhub.io/integrations.md): Interfaces describe the relation between two charms. This interface catalogue shows opinionated, standardized interface specifications for charm relations.
- [Topic pages](https://charmhub.io/topics.md): Topic pages provide a rich list of solutions for Charmhub users.

## Documentation

- [Juju documentation](https://documentation.ubuntu.com/juju/): How to deploy, integrate and manage charms with Juju: models, relations, and the CLI.
- [Charmcraft documentation](https://documentation.ubuntu.com/charmcraft/): The build tool: charmcraft.yaml reference and how-to guides for writing and publishing charms.

## Optional

- [Every page in one file](https://charmhub.io/llms-full.txt): The pages above concatenated as Markdown, for reading in one request rather than following each link.
- [Charm sitemap](https://charmhub.io/sitemap-operators.xml): Every charm page on the store. Large - for exhaustive crawling rather than reading.