I love Calibre, even calibre-web, which I can use as an ebook store by modifying the URLs in my Kobo eReader so that I can download ebooks from my server direct

I love Calibre, even calibre-web, which I can use as an ebook store by modifying the URLs in my Kobo eReader so that I can download ebooks from my server directly from the eReader over WiFi. I use Calibre to manage my collection, create book covers if I need to for non-boo k documents, web for organising and occasional looking up of things, and eReader for reading.