Home Library Software - Alfa Ebooks Manager 

An excellent book manager and reader, but unfortunately did not find the ability to bookmark while reading. And add another Ukrainian language

Why does the interface look different ob my program? When I open an ebook the ebook reader looks plain with a simple almost blank toolbar on top.

which one better than calibre??

Beautiful! but does this software support multiple languages like Arabic? Thanks

Can it open files that are stored on a NAS drive? or will it download the file to local device?

Never buy! It's worthless. It doesn't do half what it promises. It crashes if you have more than 100 books. And if you want to update you have to pay for it again. And you get rude answers to emails. A really good and working program that makes me happy is Caliber. And that's free too!