Software · Utilities & files

Kleopatra

Name: Kleopatra
Author: KDE

Certificate manager and cryptography app.

Completely free
Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: GPL-2.0+ — Open source (copyleft)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Flathub, Official plan pages (pricing, licence, terms)
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: Not applicable
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: KDE
Latest version: 26.04.2 (4 June 2026)
Latest activity: 8 June 2026
Source code: invent.kde.org/pim/kleopatra

At a glance

Kleopatra is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-2.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

Kleopatra is an open-source certificate manager and graphical front-end for cryptographic services, primarily designed to handle OpenPGP and S/MIME (X.509) certificates. Part of the KDE ecosystem, it provides an accessible interface for managing encryption keys, signing and verifying data, and encrypting or decrypting files and emails.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 9 November 2026
Facts collected from Official plan pages (pricing, licence, terms) (commercial use) — 7 November 2026
Last technical check: 6 November 2026
Description from Flathub — AppStream (Flathub)

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