https://launchpad.net/ubuntu/+ppas
Personal Package Archives : Ubuntu
Ubuntu also includes a wide variety of software through its network of software repositories. Once your system is installed you can simply call up a list of...
personal package archivesubuntu
https://ubuntu.com/docs/launchpad/user/reference/packaging/ppas/
Personal package archives - Launchpad manual
Personal Package Archives reference covering management, and building, copying, and deleting packages.
personal package archiveslaunchpadmanual