Imoin
A Firefox and Chrome Add-On to have your Icinga / Nagios monitoring system in your browser.
Firefox Add-on page: https://addons.mozilla.org/de/firefox/addon/imoin/
GitHub repository: https://github.com/ErikWegner/imoin
The software was announced in this post, more news are available at imoin tag.
This is what it looks like (during development):