Acquiring pre-releases/betas for unreleased distros for testing
34373
Where can I get the latest Ubuntu Alpha or Beta?
35973
Ways to update Ubuntu (debian-based distros) offline
132880
Where do I start to create my own Ubuntu derivative?
55857
How do I get a list of obsolete packages?
27731
How to make your own Linux distro based on Ubuntu?
61791
Beta testing and in-app purchase
56116
Will Ubuntu become rolling distro?
33658
What is the quickest and safest way to test new software and revert all changes, if needed?
126457
How can I install commonly used developer tools?
6798
What is a distro-agnostic way determine the OS install date?
134192
How to make sure I'm not using any proprietary software after installation?
129
How do I find out which version and derivative of Ubuntu is right for my hardware in terms of minimal system requirements?
17386
Where I do find feature lists for upcoming Ubuntu versions? [16.04]
49625
Under what license is Ubuntu? Can it be legally modified and distributed?
148065
What is the best way to build a package that targets a single Ubuntu release only?
71936
How can I export the "available software to download" to a file?
77275
How is the authenticity of Debian packages guaranteed?