Calibre provides all the elements required to organize and manage an e-book collection.
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Calibre is a free and open source e-book software that organizes, saves and manages your e-books and is supported by a variety of formats. Calibre also supports e-book syncing with a variety of the most popular e-book readers and can convert e-books between different formats.

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Clicking this button launches Optimum Installer ™ which will manage your download: learn more. Calibre is also available for free from the developers's website.


Calibre can easily import e-books into its library by either adding files manually or by syncing an e-book reading device.
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Calibre supports all the commercially relevant file formats and reading devices.
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Calibre helps organize a user's personal e-book library by allowing the user to sort and group e-books by metadata fields.
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Calibre is designed around the concept of logical book.
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Calibre can sort your e-books by: Title, Author, Date added, Date published, Size, Rating, Series, etc.
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Calibre can automatically be set to fetch news from websites or RSS feeds, format that news into a ebook and upload it to your connected device.
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This download is compatible with the Window's Operating System only. This software may be available for other operating systems via the manufacturer's website. You will need to use Internet Explorer, Mozilla Firefox, or Google Chrome to initiate the download.

This site offers Calibre software for download free of charge, users may still need to visit the developer's official website in order to receive troubleshooting on various aspects of the Calibre software. This Calibre download comes with Optimum Installer and recommends other optional downloads during the install process. Clicking a download link on this site launches Optimum Installer ™ which will manage your download: learn more. Calibre is available directly from the developers's website.

Additional Software & Changes to your browser settings

Once you start the installation process, we may offer you additional software or toolbars, that we think you may find useful. You do NOT have to install any additional software and you can choose to "Skip All" if you don't want to see any software we are recommending to you.
Some software may offer to change your browsers' homepage, or your browsers' default search engine and may also ask you to to install a search toolbar to enhance your search experience. You do not have to install toolbar or change any of your browsers' settings in order to use the software offered on this page. See an example of the install process below:

Incredibar Toolbar
During the install you may be asked if you want to install Incredibar toolbar. This is a toolbar which allows you to play games, play videos and music, and more with the click of a button. Incredivar is optional and is not required to install your chosen software. To remove Incredibar, simply go to your default browser - plugins/addons - and select "disable" or "remove".

Facemoods Toolbar
During the install you may be asked if you want to install Facemoods toolbar. This is a toolbar which allows you to use a variety of smiley faces with Facebook, and is optional and is not required to install your chosen software. To remove Facemoods, simply go to your default browser - plugins/addons - and select "disable" or "remove".


Babylon Toolbar
During the install you may be asked if you want to install Babylon toolbar. This is a toolbar which helps translate a variety of languages, and is optional and is not required to install your chosen software. To remove Babylon, simply go to Window's add/remove programs and select "uninstall" from there.

This website is in no way associated with the makers of Calibre.
Calibre is licensed under the GPL agreement and available at sourceforge.net.
Calibre can be downloaded directly from the manufacturer at calibre-ebook.com.