Security

Hypatia
A real-time malware scanner

Keyoxide
Verify decentralized cryptographic identities on the go

Briar
Secure Messaging, Anywhere

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

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

Cryptographic ID
Attest the trustworthiness of a device using asymmetric cryptography

ente Authenticator
ente is an end-to-end encrypted authenticator app

Varengold activeTAN
2FA for online banking

PINcredible - Secure PIN vault
Modern and secure Android app to help you remember any PIN

KeyPass
Offline, Secure, Private

Aegis Authenticator
Free, secure and open source 2FA app to manage tokens for your online services

WiFiScanner
Analyse the WiFi networks in range.

i2pd
Full-featured C++ implementation of I2P client

Status: Crypto Wallet, Messenger, Ethereum Browser
Cryptocurrency wallet, Private messenger, and Ethereum DApp Browser all in one

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

Practice Suite
The Swiss army knife of musicians

InviZible Pro: increase your security, protect you
Comprehensive application for on-line privacy and security

strongSwan VPN Client
An easy to use IKEv2/IPsec-based VPN client.

Karma Firewall
Karma Firewall blocks apps from accessing the Internet

Passman
Allow you to manage the credentials stored in your Nextcloud Passman app.

NC Passwords
A password manager app for Nextcloud's Passwords app

SshDaemon
Simpe ssh/sftp server without root.

IRMA
Authentication made easy, privacy-friendly, and secure

Yubico Authenticator
Generate OATH codes with YubiKey NEO over NFC

KPassNotes
Client app for KeePass databases

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

SelfPrivacy (Nightly)
Self-hosted services without pain

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

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

MotionLock
Keeps your device locked