安全性

OpenContacts

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

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

I2P 客户端的全功能C++ 实现

I2P

I2P 匿名網絡

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.

Tinc App

Tinc 网状 VPN 守护程序的 Android 绑定和用户界面

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

加密您的文件和通信。兼容 OpenPGP 標準。

Briar

暗網社交網絡

Safe Notes - Encrypted Notepad

Encrypted, Private note manager

sNotz

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

LessPass

為您的帳號產生獨一無二的密碼根據一個主要的密碼

SshDaemon

Simpe ssh/sftp server without root.

OONI Probe

開放式網絡干擾觀測站 (OONI)

IRMA

Authentication made easy, privacy-friendly, and secure

Hypatia

A real-time malware scanner

ANOTHERpass

Another way to manage passwords

e-Passport Reader

使用 NFC 芯片与电子护照通信

Aegis 验证器

免费,安全和开源的双重认证(2FA)应用,用于管理您的在线服务令牌

Yubico Authenticator

通过 NFC 使用 YubiKey NEO 生成 OATH 代码

OUI Lookup and Database

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

XPrivacyLua

適用於棉花糖(6.0)和更高版本的真正易用的隱私管理器

Mullvad VPN: privacy is a universal right

Protect your online privacy with a fast, trustworthy, and easy-to-use VPN.

Standard Notes

适用于数字专家和专业人士的端到端加密笔记应用

Better Internet Tiles

Bring back Wi-Fi and mobile data tiles on Android 12 or higher