(EN) Canonical releases source code for Launchpad, su ubuntu.com, Canonical Ltd., 21 luglio 2009. URL consultato il 10 marzo 2011 (archiviato dall'url originale l'8 marzo 2011).
«Canonical, the founder of the Ubuntu project, announced today that it has open-sourced the code that runs Launchpad, the software development and collaboration platform used by tens of thousands of developers.»