Secret Space Encryptor (SSE)

File Encryption, Text Encryption (Messages, Notes, …), Secure Password ManagerGPL-3.0-only

User-controlled decryption operations

Emulates a smart card and lets you control the decryption operationsGPL-3.0-or-later

37C3 Wifi Setup

Official NOC application for connecting to the 36C3 Wi-FiApache-2.0

Cryptocam - encrypting camera app

Take encrypted photos and video to protect sensitive information.GPL-3.0-or-later

ProtonVPN - Secure and Free VPN

Free Swiss VPN with advanced security and privacy features.GPL-3.0-only

Proton Pass: Password Manager

Password manager created by the scientists who met at CERN behind Proton Mail.GPL-3.0-or-later

InviZible Pro: increase your security, protect you

Combine the strengths of Tor, DNSCrypt and I2P for security and anonymityGPL-3.0-or-later

DroidFS

Store & access your files securelyAGPL-3.0-only

FairEmail

Fully featured email client. Neat, intuitive user interface. Privacy friendlyGPL-3.0-only

SnapSafe

Snap pics of anything, safely.MIT

Rethink: DNS + Firewall + VPN

Firewall apps, use WireGuard VPN, monitor network, block malware, change DNS.Apache-2.0

Calyx VPN

Free VPN Service offered by The Calyx InstituteGPL-3.0-only

K-9 Mail

Full-featured email clientApache-2.0

Carnet

Powerful note taking app with sync and online editorGPL-3.0-only

Bitmask

Encrypted communication for mere mortals (superheroes welcome, too).GPL-3.0-only

Tuta Mail

Encrypted email & calendar service - easy to use, secure by design.GPL-3.0-or-later

Thunderbird: Free Your Inbox

Thunderbird is a 100% Open Source, privacy-focused email app.Apache-2.0

Thunderbird Beta for Testers

Thunderbird is a 100% Open Source, privacy-focused email app.Apache-2.0

Jami

Share, freely and privatelyGPL-3.0-or-later