Calibre
The official source code repository for the calibre ebook manager
About Calibre
calibre is an e-book manager. It can view, convert, edit and catalog e-books in all of the major e-book formats. It can also talk to e-book reader devices. It can go out to the internet and fetch metadata for your books. It can download newspapers and convert them into e-books for convenient reading. It is cross platform, running on Linux, Windows and macOS.
For more information, see the calibre About page (opens in a new tab).
Screenshots
Usage
See the User Manual (opens in a new tab).
Bugs
Bug reports and feature requests should be made in the calibre bug tracker at Launchpad (opens in a new tab). GitHub is only used for code hosting and pull requests.
Description adapted from the project README.
- Version
- 9.16.0
- Updated
- Oct 9, 2026
- Size
- 228 MB
- License
- GNU GPL 3.0
Open source details
- Source code
- Exact source for v9.16.0
- Released
- Oct 9, 2026
- GitHub stars
- 26.2K
- Website
- calibre-ebook.com
Community project. Help and bug reports go to the maintainers on GitHub; AppsXi does not provide support for this app.
License
CopyleftGNU GPL 3.0
Use and change it freely; anything built from it must be shared under the same license, with its source.
Read the full licenseHow this app was checked
AppsXi checks every version before it is listed.
Signed by Kovid Goyal
Certificate from GoGetSSL G4 CS RSA4096 SHA256 2022 CA-1,O=EnVers Group SIA,C=LV
Signature stays valid after its certificate expires
All bundled programs are signed
File matches the fingerprint GitHub published
Show the SHA-256
99ba538ca701c7c3b234d19b2236349c3aff3b55244ab9016072f74e6294e40a
No malware found
ClamAV 1.5.4 on Oct 18, 2026
1 technical note
- 1 bundled binaries lack ASLR or DEP
Not included yet: installing and watching the app run in a virtual machine.
What these checks do and don't coverVersions
Checked Oct 18, 2026 · Windows
MSI · 228 MB
Questions about Calibre
Is Calibre free?
Yes. Calibre is free and open source under the GNU GPL 3.0. AppsXi lists the maintainers' official release and does not charge for it.
Is Calibre safe to download?
AppsXi downloads every version of Calibre from the maintainers' official GitHub release and checks it before it is listed. For version 9.16.0 (checked Oct 18, 2026), the Windows download is Authenticode signed, each file matches the checksum GitHub publishes for the release, byte for byte and a malware scan found nothing.
Who makes Calibre?
Calibre is an open source project by Kovid Goyal on GitHub (kovidgoyal/calibre). Help and bug reports go to its maintainers there.
Reviews
No reviews yet. Anyone who downloads it from AppsXi while signed in can review it a day later.
Something wrong with this app? Report a problem. Maintainer? Ask us to change or remove this listing.
Maintain Calibre? Add the AppsXi badge to your README
[](https://appsxi.com/apps/calibre)
It shows when Calibre is in a top 10 and says “Verified on AppsXi” otherwise.
