Grenixal

Server browser for JO/JA with many supported masterservers. You can also customize the masterserver settings in settings.ini.
You are able to join server directly from the browser. The browser includes favourite list and a server guard, which will inform you when someone has joined the guarded server.
 
For further instructions please read Oobah's comment below.
 
You need Java to run this server browser.
https://java.com/en/download/