# 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

- [Troubleshooting](https://ubuntu.com/docs/launchpad/user/reference/troubleshooting/index.html.md): Troubleshooting guide for resolving common Launchpad issues.
- [Your email address is already in Launchpad](https://ubuntu.com/docs/launchpad/user/reference/troubleshooting/email-address-already-in-use/index.html.md): Reference for troubleshooting email address conflict during registration.

## Optional

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