Hackernews (Score: 1) by zafiro17@pipedot.org on 2014-08-24 23:38 (#417) There's some excellent commentary over at HackerNews. Looks like the UI is universally hated (I didn't think it's so bad).https://news.ycombinator.com/item?id=8212885Within that thread is a link to a LWN article worth reading, about some security flaws and the project owner's somewhat arrogant refusal to fix them. Looks like calibre may be open source in that you can see the source code. But the project owner isn't overly open to taking bug reports, it seems. Oh well, a one-man project! He's not the only one!