What is Nexus?
The Nexus repository is a repository that facilitates the discovery, access and installation of public artifacts. It supports open source dependencies and references them in Maven-compatible package declarations. The most common use is to resolve a target dependency by hashing a file with a specified MD5 sum and using Nexus to look up the artifact in its local cache or available repositories . It is also possible to combine Maven (and other) metadata with an artifact before publication.
What is Ubuntu?
Ubuntu is a Linux-based operating system that runs from the desktop, to the cloud, to all your internet connected things in between. Perfect for home users, students and hackers alike, its easy-to-use interface puts you in control of your machine. Users can run Ubuntu on a computer, or in a virtual machine on top of their existing operating system. There are three editions: 'Ubuntu Desktop Edition' for personal computers, the 'Ubuntu Server Edition', and the lightweight 'Ubuntu Core' edition for embedded devices and appliances.
Publish Ubuntu packages on Nexus with packagecloud
If you’re looking to publish Ubuntu packages on Nexus, you can use packagecloud to handle all of your package management. Packagecloud works with all kinds of packages, not only Ubuntu packages. With packagecloud you can manage all of your packages from various OS’s, languages, and more. Always trust that your packages will be secure when you publish your Ubuntu packages on Nexus via packagecloud.
Nexus also integrates with

Archlinux

CentOS

Debian

Fedora

Gentoo

Java

Javascript

Kubuntu

Lubuntu

Manjaro

OpenSUSE

Python

Red Hat

Red Hat Enterprise Linux

Ruby

Slackware

SuSe

Xubuntu

Archlinux

CentOS

Debian

Fedora

Gentoo

Java

Javascript

Kubuntu

Lubuntu

Manjaro

OpenSUSE

Python

Red Hat Enterprise Linux

Red Hat

Ruby

Slackware

SuSe

Ubuntu

Xubuntu