calibre是一个“一站式”的电子书解决方案，它可以全面满足你的电子书需求。calibre是
免费的，源代码开放，拥有跨平台的设计。
它是一个完整的电子图书馆，包括图书馆管理，
格式转换，新闻，将材料转换为电子书，以及电子书阅读器同步功能、整合进电子图书阅读器。
免费的电子阅读
软件。 包含多国语言,其中包括
中文 
When downloading metadata from Amazon, convert the amazon categories into tags. You can turn this off by going to Preferences->Metadata download and configuring the Amazon source.
Kobo driver: Add an option to modify the styling in books being sent to the device, based on a template on the device.
Get Books: Add support for two more Polish ebook stores: cdp.pl and ebooki.allegro.pl
calibredb: Add a new clone command to create clones of libraries with the same custom columns, virtual libraries, etc. as the current library.
Bug Fixes
MOBI metadata: Do not fail to set metadata in MOBI files if they have EXTH fields with NULL pointers to a cover or thumbnail.
Fix editing of book metadata failing when its timestamp is out of range for the system.
Fix renaming a user category to the same name it already has erases the user category.
Fix drag 'n drop of cover onto conversion dialog not working
Device drivers: Explicitly fsync() all files when writing to devices, to reduce chances of file corruption if the device is disconnected while jobs are running
Fix calibre not appearing in Ubuntu's 'Open with..' menu
官方主页
http://calibre-ebook.com文件大小:50 M;
下载 -32Bit 官方安装版下载 -64Bit 官方安装版下载 - 官方便携绿色版
