Security

i2pd
Full-featured C++ implementation of I2P client

Freenet mobile
Access Freenet from the palm of your hand

OUI Lookup and Database
Find a device's manufacturer by its MAC address and browse OUIs assignments

AdAway
A free and Open Source ad blocker for Android.

SnoopSnitch
Check mobile network security

WireGuard
Next generation secure VPN network tunnel

eduVPN
eduVPN connects securely and encrypted to your institution or Internet

ClassyShark3xodus - Scan apps for warnings
Checks apk(s) for known trackers (provided by Exodus) +other warnings and specs.

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

XPrivacyLua
Really simple to use privacy manager for Marshmallow (6.0) and later

FindMyDevice
Locate your smartphone via SMS when it gets lost

Password Generator
Password Generator is an app for generating secure passwords

MotionLock
Keeps your device locked

Hypatia
A real-time malware scanner

mOTP
One-time password generator

DroidFS
Store & access your files securely

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

Lavabit Encrypted Proxy
Client for Lavabit‘s Encrypted Proxy

DeadHash
Hashsum calculation utility

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

Syphon
A privacy centric matrix client

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

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

Trigger
Open doors via Wi-Fi using HTTPS/SSH.

KeyPass
Offline, Secure, Private

Mooltifill
Use the Android Autofill service with the Mooltipass BLE hardware authenticator

OONI Probe
Open Observatory of Network Interference (OONI)

I2P
I2P anonymous network

Blink Comparison
Simplifies comparing photos of tamper-evident seals using your eyes

Calyx VPN
Free VPN Service offered by The Calyx Institute