Open Source Android Authentication Apps

Open source two-factor authentication for Android. It implements Time-based One-time Passwords (TOTP) and HMAC-Based One-Time Passwords (HOTP). Simply scan the QR code and login with the generated 6-digit code. This project started out as a fork of the great OTP Authenticator app written by Bruno Bierbaumer, which has sadly been inactive since 2015. By now almost every aspect of the app has been changed/re-written so the fork status of the Github repository got detached upon user request. But all credit for the original version and for starting this project still goes to Bruno.

A fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication.

An open source implementation of the FIDO2 protocol to support passwordless strong authentication using public-key cryptography. Supports registration, authentication (all platforms), and transaction authorization (for native Android apps).

The nativescript-fingerprint-auth plugin enables biometric authentication in NativeScript applications, allowing users to authenticate using fingerprint or facial recognition, enhancing security and user convenience.

SikkerBox is a comprehensive security and network utility application designed to provide users with essential security tools and network diagnostics in one convenient package. Key Features Two-Factor Authentication (2FA) Network Diagnostic Tools Port Checker: Verify if specific ports are open or closed on any IP address, provides a list of commonly used ports for quick one-click selection. IP Location Lookup: Determine the geographical location of any IP address, includes the function of automatically obtaining the user’s public IP WiFi Scanner: Analyze nearby WiFi networks, including signal strength, channels, and security information Ping Diagnostic: Test connectivity to domains or IP addresses Whois Lookup: Query registration information for any domain name DNS Reverse Lookup: Find hostnames associated with IP addresses More features：Stay tuned for more features