Well, it's time. I'm releasing my tool that lets you aggregate patch and update status of hosts over ssh on unix-like systems.
The github repository has details as well as links to the exhaustive documentation.
It is my hope that at least another person finds it useful
A poor quality animated gif of the exosphere CLI, showing hosts in a nice table. The UI is then launched, showing a dashboard of green tiles with a host in each. A command is launched and a modal dialog box shows up, then the inventory screen is switched to.
The table shows hosts, their status and available updates, some of them are categorized as "security updates", in red. A host is selected, which opens a pane on the right displaying the details as well as a detailed list of updates. An update is selected, and another panel opens up, from the left this time, displaying the patch details. Current version, new version, source, etc.