# 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

- [Rationale headers in Launchpad email](https://ubuntu.com/docs/launchpad/user/explanation/message-rationale-headers/index.html.md): Understand rationale headers used in Launchpad emails.

## Optional

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