It's all very well for those of you who understand where to find repositories and how to enter them in to the Application Catalogue (you know the bit where Free, Non-Free and Chinook, Bora etc has to be entered in different fields). But I don't fully understand this stuff properly yet, and going to Gronmayer and installing a repository correctly just by clicking 'Install' was very convenient for inexperienced users like me. Also searching for non-standard Apps for a particular OS helps a lot.