# 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

- [Core components and setting up Launchpad](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/index.html.md): Overview for setting up and understanding Launchpad covering installation, framework, navigation, pip, PPA, testing, and concepts.
- [Parts of Launchpad](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/index.html.md): Overview of the different parts of Launchpad.
- [Launchpad code hosting](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/code/index.html.md): Overview of Launchpad's code hosting system including VCS clients, hosting infrastructure, and source code browsers.
- [Engineering overview: translations](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/engineering-overview-translations/index.html.md): Engineering overview of Launchpad's Translations subsystem for Ubuntu and Launchpad-registered projects.
- [Librarian file storage](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/librarian/index.html.md): How Launchpad's librarian stores and retrieves files, including URL resolution, database relationships, and Swift storage strategy.
- [Launchpad mail](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/mail/index.html.md): Overview of email types in Launchpad and how the are configured.
- [About Malone](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/malone/index.html.md): Understand the Malone bug tracker and what makes it substantially different from existing bug tracking tools.
- [Navigation menus](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/navigation-menus/index.html.md): Learn how to use Navigation Menus to link views in Launchpad page templates.
- [Launchpad registry](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/registry/index.html.md): Understand the Launchpad registry and its core domains.
- [URL traversal](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/parts-of-launchpad/url-traversal/index.html.md): Explanation of URL traversal methods in Launchpad.
- [Publisher](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/publisher/index.html.md): Overview of Ubuntu publishing topics.
- [Ubuntu package publishing](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/publisher/ubuntu-package-publishing/index.html.md): Understand the Ubuntu package lifecycle from source upload to archive publication.
- [Ubuntu archive publisher](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/publisher/ubuntu-archive-publisher/index.html.md): Understand the steps a package goes through when it enters the Ubuntu archive publisher.
- [Valid-Until configuration for distribution series](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/publisher/valid-until/index.html.md): Overview of the valid_until_config on a distroseries
- [Application framework](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/framework/index.html.md): Understand Launchpad's application framework built around the Zope Toolkit.
- [Code concepts](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/concepts/index.html.md): Understand core code concepts in lp.code modules including registry objects, branch, target, and merge proposal.
- [The Launchpad PPA](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/launchpad-ppa/index.html.md): Learn about the PPA containing dependencies needed to run Launchpad.
- [Navigating the tree](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/navigating/index.html.md): Navigate the Launchpad source tree with guidance on key directories including bin, utilities, lib, and database folders.
- [Launchpad pip integration](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/pip/index.html.md): Understand Launchpad's pip integration for managing Python packages including setup, usage, and dependency management.
- [Launchpad installation details](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/running-details/index.html.md): Understand what happens when you use the rocketfuel-setup script to set up a local instance of Launchpad.
- [Testing](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/testing/index.html.md): Learn how to test different Launchpad changes locally.
- [Building live filesystems in Launchpad](https://ubuntu.com/docs/launchpad/developer/explanation/core-components-and-set-up/building-live-filesystems/index.html.md): Learn how Launchpad builds live filesystems using livecd-rootfs with LiveFS and LiveFSBuild objects.

## Optional

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