Is there a software to have an overview over multiple wallets? Would be great to throw my excel sheet with manually added exchange rates and stuff away 
I was thinking about this myself today. I'm really surprised something like Armory for multiple wallets does not exist yet. I'm a software engineer, so I'd love to look into making something that would manage all of these alt coin wallets securely, but unfortunately (for my side projects), I have my first little one on her way soon. Really think this would be a big improvement for the alt coin circuit though.