OpenDNSUpdater

OpenDNS Updater is an extremely easy to use android app to perform IP updates.

Disabler

Disable any applications, and easily enable it with a pretty customisable launch

KeePassDroid

KeePass-compatible password safe

TrackerControl

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

NetGuard

A simple way to block access to the internet per application

AuthPass

Keep your passwords save across all platforms and devices.

IVPN

Privacy focused VPN service with WireGuard

Greentooth

Automatic Bluetooth disabler

Trigger

Open doors via WiFi using HTTPS/SSH.

KeePassDX

Secure and open source password manager compatible with KeePass files.

DuOTP

Log in to Duo-protected services with any standard OTP app

I2P

I2P anonymous network

AdAway

AdAway is an open source ad blocker for Android using the hosts file.

Knock on Ports

Port knocking client

CloudMare

Small & Simple Cloudflare tool

SQRL Login

An implementation for SQRL (Secure Quick Reliable Login)

WireGuard

Next generation secure VPN network tunnel

OONI Probe

Open Observatory of Network Interference (OONI)

ADBungFu

Superuser ADBcmd appOps freezer ^4 root ed :# su Magisk (aosp/opPerms)

Riseup VPN

Secure VPN powered by Bitmask

Calyx VPN

Free VPN Service offered by The Calyx Institute

EteSync

Secure, private and end-to-end encrypted calendar, contacts and tasks sync

Seguime

Follow where your device goes without being followed by you

OpenContacts

Hide contacts away from apps stealing your contacts information

andOTP

Time-based One-time Passwords (TOTP) from QR codes for two-factor authentication

ClassyShark3xodus

Scan apps for trackers

Port Authority

Port scanner

Aegis

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

Briar

Secure Messaging, Anywhere

NeoLinker

Linkup sub-engine, select browser to open link

PilferShush Jammer

Block unwanted use of onboard microphone

AFWall+

Control network traffic

Bitmask

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

SnoopSnitch

Check mobile network security

Tinc App

Android binding and user interface for the tinc mesh VPN daemon

Tessercube

OpenPGP Made Mobile

OpenKeychain

Encrypt your Files and Communications. Compatible with the OpenPGP Standard.

XPrivacyLua

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

S. Notes

A simple and private notes app

Exodus Privacy

Show trackers and permissions from other installed apps

TinyKeePass

Another simple read-only KeePass app

LessPass

Generate unique passwords for your accounts based on a master password

FlutterHole

A third party application for the Pi-Hole® dashboard

DCipher

secret Text with 100% offline Encryption

Private Lock

Lock your phone from its movement force

Ripple

Trigger apps to protect your privacy when in anxious or panic situations

Shelter

Isolate your Big Brother Apps / Multiple Accounts

Derandom

Pseudo random number predictor

Silence

Encrypted SMS/MMS conversations made easy!

PanicTrigger

Helps you and others in case of an emergency

k3pler

Network connection blocker and packet analyzer

Salasana

Generates site-specific unique passwords

NextcloudPasswords

Manage your Nextcloud passwords

App Lock

Deny access to set apps by pattern locks, prevent abuse, protect your privacy

User-controlled decryption operations

Emulates a smart card and lets you control the decryption operations

Authorizer

Password Manager with USB Keyboard emulation

Password Generator

Generate passwords

Oversec

Privacy for All Apps! Encrypt and Disguise Messages in All Your Apps!

FreedomBox

A companion app for your FreedomBox server

Schlüssel

Control Krautspace's door

AppOpsX

A front-end for the AppOpsService

Diceware Password Generator

Generate diceware passwords

My Wifi Passwords

View your Wi-Fi Passwords

FiSSH

SSH authentication via Fingerprint scanning over network (TLS Sockets).

PGPClipper

Add PGP support via clipboard

Binary Kitchen Doorlock

Binary Kitchen's Open Sesame

Secure photo viewer

A media-viewer that functions ontop of your lockscreen

aRevelation

password manager based on Revelation Password Manager file format

Note Crypt Pro

Keep your notes safe and secure

p≡p | Pretty Easy Privacy (pEp)

Read and write encrypted e-mails

EDS Lite

Virtual disk encryption

PluckLockEx

Lock your phone when snatched

Encrypt Text

Minimalistic application to encrypt plain text using AES 256

sesam

Hash based password manager

Router Keygen YoloSec

Generate default WPA/WEP keys

ObscuraCam

Blur faces and remove camera and location metadata with this privacy camera app

RetroShare

RetroShare Android Chat Prototype

OneTimePass

Two-factor (TOTP) authentication

SELinuxModeChanger

Set SELinux mode on boot

Hash Droid

Verify file integrity

WhereAreTheEyes

Build a map of surveillance cameras with other activists

OpenPass

Reimplementation of SafeNet MobilePass

CryptoPass

Strong passwords for different websites using a single secret key

PGPAuth

Send PGP-verified requests

Port Knocker

Port Knocker Client

PixelKnot

Have a secret that you want to share? Why not hide it in a picture?

D00R

Unlock the door at Hackspace Siegen

WLANScanner

Analyse the WLAN access points in range

PIN Mnemonic

Helps you to memorize PIN codes

Satoshi Proof

Prove chronology of events

Puff

Password Utility

Pijaret

Encrypt text by rotation

IsPhoneEncrypted

Check if the disk is fully encrypted

orWall

Force apps to use Tor

PassCard

Generate password card

openmentoring-mobile

Helps access and share practical educational content on digital security

UPM

Cross platform password manager

Locker

Enforce maximum failed unlock attempts

mOTP

One-time password generator

Surespot

Send encrypted text messages

Cryptfs Password

Disk encryption password changer

Secret Codes

Secret code scanner

Peanut Encryption

Encrypted password manager. Only local stored

SnooperStopper

Set different boot and unlock passwords

Superuser

Manage root access

cSploit

Network analysis and penetration toolkit

SimpleTextCrypt

Encrypts plain text using AES256

OTP Authenticator

A two-factor authentication App

ΞtheRemotΞ

Ethereum Remote

SuperGenPass

Implementation of SuperGenPass

QRStream

Transfer files and text via successive QR codes

Wrong Pin Shutdown

Shutdown after 10 unsuccessful logins

Icicle for Freenet

Connect to your Freenet node

Twik

Manage and generate secure passwords

Orbot

Enhance your privacy, break through firewalls and communicate more safely.

Passera

Generate strong passwords

App Locker

Protect apps with a password or pattern

CrocodileNote

Take notes and encrypt them

QuickMSG

Send encrypted instant messages via email

Mobilne Bezpieczeństwo

List apps by categories of permissions

dynalogin

Two-factor HOTP authentication

Easy Token

RSA SecurID software token with widgets

PluckLock

Lock phone on accelerometer changes

ClipCaster

Show unauthorized access to password safes

Shellshock Vulnerability Scan

Scan for Shellshock vulnerability

aRevelation

Password manager

Hash It!

Use strong passwords

Secrecy

Secure file storage

HashPass

Use hashes as passwords

PasswordMaker Pro

Password maker

Frog Password Generator

Helps to remember passwords

OI Safe

Password and private data manager

APG

Encrypt email and files

InTheClear

Alerting and secure wipe

Gort

Two factor auth client for Barada

Superuser

Manage root access

SecDroid

Secure your device from attacks

NoteCipher

Notepad with lock

Lock Pattern Generator

Generate a random lock pattern

DroidWall

Firewall frontend

CallerID

Caller identification

EncPassChanger

Use a stronger disk password

NoUSSD

USSD firewall

AppLocker

Lockdown your apps

Authenticator

Two factor authentication

Voodoo CarrierIQ Detector

Check for Carrier IQ spyware on the device