"Άνθρωπος αγράμματος, ξύλο απελέκητο"
This download is an IFilter shell extension that deals with AZW and MOBI ebooks. These formats are really compressed archives of HTML files and their image, CSS and other resources. The format is quite complex (apparently it supports notes and even databases), but luckily for me I discovered the open source libmobi project that does most of the hard labour, and I only had to wrap it in a text filter DLL. Here is the installer:
Minimum requirements: windows XP or later (32 or 64 bit)
Once installed this IFilter component will let windows desktop search and shell friendly file managers like xplorer² (and Deskrule) to extract text previews and search into kindle ebooks. Note that the Amazon AZW format is proprietory and often encrypted, so many of the books you bought won't be readable outside your kindle device. But for all MOBI and AZW books found in free collections, the plugin will work fine.
For the full kindle ebook works, don't forget the old MOBI/AZW/PRC MobiHandler thumbnail plugin (which also does book author/title properties), then you can turn xplorer² into a calibre-matching ebook manager — almost!
Happy holidays, everyone!