# Launchpad

> This is the documentation for Canonical Launchpad, an open source platform that
> enables open source developers to collaborate with others to build and publish open
> source software.


2026 CC-BY-SA, Canonical Ltd.

## Pages in this subsection

- [Packaging](https://ubuntu.com/docs/launchpad/user/reference/packaging/index.html.md): Packaging reference for Launchpad including PPAs and source builds.
- [Personal package archives](https://ubuntu.com/docs/launchpad/user/reference/packaging/ppas/index.html.md): Personal Package Archives reference covering management, and building, copying, and deleting packages.
- [Personal Package Archive](https://ubuntu.com/docs/launchpad/user/reference/packaging/ppas/ppa/index.html.md): Personal Package Archive reference - supported series and architectures, quotas, retention, and signing key facts.
- [Building a source package](https://ubuntu.com/docs/launchpad/user/reference/packaging/ppas/building-a-source-package/index.html.md): Reference for building source packages in Launchpad PPAs including versioning, snapshots, and dependencies.
- [Prioritising builds](https://ubuntu.com/docs/launchpad/user/reference/packaging/build-scores/index.html.md): Reference for prioritizing builds in Launchpad using build scores.
- [Builder specs](https://ubuntu.com/docs/launchpad/user/reference/packaging/builder-specs/index.html.md): Builder specifications for different architectures in Launchpad.
- [Source builds](https://ubuntu.com/docs/launchpad/user/reference/packaging/source-builds/index.html.md): Source builds reference documents including naming conventions, and the knowledge base.
- [Naming conventions for daily builds](https://ubuntu.com/docs/launchpad/user/reference/packaging/source-builds/naming-conventions/index.html.md): Naming conventions for daily builds in Launchpad.
- [Source builds knowledge base](https://ubuntu.com/docs/launchpad/user/reference/packaging/source-builds/source-builds-knowledge-base/index.html.md): Source builds knowledge base with articles and guides for working with and troubleshooting Launchpad's daily builds feature.

## Optional

- [Top-level llms.txt](https://ubuntu.com/docs/launchpad/llms.txt): Complete documentation index.