Party Finder
From SpiralKnights
The Party Finder is located at the top of the screen along with the Missions button. It will display a list of parties open to the public for joining, including the gate or mission name, current party members, depth number, and depth name.
The Party Finder will continue to search for parties as long as it is open and will send you notifications when new parties are found. You can turn it off by clicking the Party Finder button again.