Starbound Launcher
From Starbounder - Starbound Wiki
The Starbound Launcher was the window that opens when you hit 'play' in Steam. It allows you launch any of the various types of Starbound game applications with the buttons at the bottom of it. It's a custom sized web page which can be directly accessed at [1]
It also shows recent developer tweets and blog posts, as well as giving links to this wiki and the official forums. In the bottom right it shows the name and date of the latest Stable update. Also in the Starbound launcher is the ability to launch different builds of the game