# 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

- [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.

## Optional

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