# 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

- [MockIo library](https://ubuntu.com/docs/launchpad/developer/how-to/launchpad-development-tips/mockio/index.html.md): Use the MockIo library to test JavaScript code that makes Y.io calls.

## Optional

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