Security

Riseup VPN

Secure VPN powered by Bitmask

Bitmask

Encrypted communication for mere mortals(superheroes welcome, too).

Insular

Isolate your Big Brother apps

p≡p | Pretty Easy Privacy (pEp)

Read and write encrypted e-mails

i2pd

Full-featured C++ implementation of I2P client

TrackerControl

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

Standard Notes

A simple and private notes app

Freenet mobile

Access Freenet from the palm of your hand

Briar

Secure Messaging, Anywhere

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

KeePassDX

Secure and open source password manager compatible with KeePass files.

ClassyShark3xodus - Scan apps for warnings

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

AirGuard - AirTag protection

Protect yourself from Apple's Find My Tracking

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

Pushie

Provides temporary, secure, password sharing

DroidFS

Store & access your files securely

sNotz

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

PCAPdroid

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

Lavabit Encrypted Proxy

Client for Lavabit‘s Encrypted Proxy

SelfPrivacy

Self-hosted services without pain