Security

SelfPrivacy (Nightly)
Self-hosted services without pain

Standard Notes
An end-to-end encrypted note-taking app for digitalists and professionals

Vigilante
Know when a third-party app uses your device camera/microphone

Hypatia
A real-time malware scanner

OpenContacts
A different database for contacts to keep them private only to you.

MotionLock
Keeps your device locked

Varengold activeTAN
2FA for online banking

Tinc App
Android binding and user interface for the tinc mesh VPN daemon

Briar
Secure Messaging, Anywhere

TrackerControl
TrackerControl allows to monitor and control hidden data collection in apps.

Amarok
Hide your private Files and APPs with a single click.

ANOTHERpass
Another way to manage passwords

Yubico Authenticator
Generate OATH codes with YubiKey NEO over NFC

KeePassDX
Secure and open source password manager compatible with KeePass files.

IRMA
Authentication made easy, privacy-friendly, and secure

Passy - cross-platform password manager
Offline password manager with cross-platform synchronization

PCAPdroid
No-root network monitor and traffic dump tool for Android devices

i2pd
Full-featured C++ implementation of I2P client

I2P
I2P anonymous network

Rethink: DNS + Firewall
Firewall apps, monitor network activity, block malware, change DNS.

Exodus
Exodus show you trackers and permissions in apps installed on your device.

Photok
Encrypt your photos on your device and keep them safe from others.

Flipper Mobile App
Organize data and keys on your Flipper Zero device

Cryptographic ID
Attest the trustworthiness of a device using asymmetric cryptography

Secret Space Encryptor (SSE)
File Encryption, Text Encryption (Messages, Notes, …), Secure Password Manager

OpenKeychain: Easy PGP
Encrypt your Files and Communications. Compatible with the OpenPGP Standard.

Safe Notes - Encrypted Notepad
Encrypted, Private note manager

sNotz
An open-source and completely offline application to manage simple notes

LessPass
Generate unique passwords for your accounts based on a master password

SshDaemon
Simpe ssh/sftp server without root.