calibre v6.20 Updated

Ennovy on 9 Jun 2023
  • 403MB (uncompressed)
  • Released on 9 Jun 2023
  • Suggested by I am Baas

calibre is a feature-rich e-book library management application with a variety of useful functions including viewer, addendums, editor, online book and news search/download. The software can perform detailed searches, convert e-books to device-specific formats, batch metadata tools, and a content server for online access to your collection.

The program syncs automatically with many different physical devices. It supports a variety of ebook and document formats.

Cross-platform with clients available for Mac and Linux. Alternatively, Calibre Portable and X-calibre, as well as a WinXP-compatible version are also available.

Runs on:Win10 / Win11
Writes settings to: Application folder
Dependencies: Requires 64-bit Windows
Stealth: ? No. HKCU\Software\Trolltech
Unicode support: Yes
License: GNU GPLv3
How to extract: Download the "portable installer" and extract to a folder of your choice. Launch calibre-portable.exe.
Similar/alternative apps: TEBookConverter
What's new? See:

23 comments on calibre  The Portable Freeware Collection Latest Entries Feed

Ennovy 2022-07-21 03:41

Thanks IndioBB. I changed the entry accordingly


IndioBB 2022-07-19 21:00

Calibre 6.x not runs on Vista / Win7 and Win8


hamasaki 2021-03-27 00:23

Now at 5.14


JohnTHaller 2020-07-20 20:36

AndTheWolf - Although not officially supported, the current release works fine on Windows 7. is testing every release for compatibility with Windows 7 as part of packaging calibre Portable. One of us will update the listing if something changes in the future.


AndTheWolf 2020-07-17 14:13 states that current Calibre versions are for Windows 8 and higher, and the last version to fully support Window 7 is calibre 3.48. Downloads for 3.48, including the portable installer version, are at You should change the system requirements.


olliebean 2018-02-24 08:29

Incidentally there's an official portable version available on the Calibre website (, which works fine and appears to be stealth. (No Trolltech keys.)


donald 2015-07-24 19:38

Per CALIBRE Version: 2.33.0 beyond version 1.48x CALIBRE no longer supports XP.
Download XP Compatible from


filobus 2015-05-28 07:38

@bzl333 weel, you have to bear criticism if you want to improve! (unkind criticism is another matter)
Calibre is "huge" (maybe it have to be like that, it's not a criticism, it's just a pity!), and I too don't like at all its way to make its own library (I have to put there only books I want to convert, and remove them, not a user friendly behaviour). It's a little too complicated, but it does its job well!
For me it's a must-have but also a could-be-better!! :-)


bzl333 2015-02-06 18:08

@Tom - well its FREEEEEEEE so you got more than you paid the evil author of the program. also will be nice if you spend thousands of hours developing a free program and then let others criticize you with BIG BOLD ANGRY CAPITALS!!!!


TomSJr 2015-01-23 18:49

Calibre has become bloated and slow over the last 2 years. I just can't use it anymore. I stick with Calibre 0.8.66 (August 2012) thru Portable Calibre 0.9.17 (FEB 2013). Anything past June of 2013, you are asking for trouble. I can only give this 1 star for the newer versions. I don't like how it puts a preference in your registry. THAT IS NOT GOOD FOR A PORTABLE TOOL. Portable is supposed to be PORTABLE and it should not place ANYTHING in your registry or on your PC, but it does. TO ME, THAT IS JUST PLAIN WRONG AND YOU SHOULD BE VERY CAREFUL ABOUT CALIBRE.


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