Apps similar to itsme include 2FA Authenticator (2FAS), which is free and open source. Other options are Authy, Google Authenticator, FreeOTP and Authenticator Extension. You're spoiled for choice with Authenticators like itsme: we list more than 25 alternatives for iPhone, Android, iPad, Mac and Windows.
Protectimus Solutions provides a powerful multi-factor authentication service. We offer 2FA SaaS platform and on-premise version of the product which supports a great variety of TOTP tokens and program tokens for OTP delivery.
United Kingdom
OAuth 2.0 Authorization Code Flow with PKCE allows you to authenticate on behalf of another user with have more control over an application's scopes and improves authorization flows across multiple devices.
United States
A secure, fast, and convenient way for users to log into your app, and for your app to ask for permissions to access data.
United States
GTK+ application for securely managing TOTP & HOTP tokens. Content is encrypted on disk using AES256-GCM. Master password derived using PBKDF2 with 100k iterations & SHA512 as hash algorithm. Can import encrypted backups from andOTP & Authenticator+.
Italy
EU
Open-source Android authenticator supporting TOTP and HOTP, material design UI, backup and restore via files, Google Drive, or Android backup, works offline, privacy-focused, no analytics or ads, suitable for securing logins on popular services.
Etopa is a two-factor-authentication app, which runs as a web server and can be accessed using a web browser or using an Android app. You can use the Etopa.de instance or host your own.
Infomaniak Auth is a free mobile application that improves and simplifies the security of Infomaniak accounts protected by two-factor authentication.
Switzerland
Duo Mobile works with Duo Security's two-factor authentication service to make logins more secure. The application generates passcodes for login and can receive push notifications for easy, one-tap authentication.
United States
Two-factor authentication app for Yandex accounts and also other QR-code based temporary codes for two-factor authentication
Russia
IndieAuth is a way to use your own domain name to sign in to websites. It works by linking your website to authentication providers such as Twitter or Google, then entering your domain name in the login form on websites that support IndieAuth.
United States
CryptoPhoto gives you a fast and safe way to log into your favorite participating web sites while enjoying leading-edge protection against phishing, malware attacks, and scamming.
Australia
Secure your Zoho Account with easy-to-use, multi-factor authentication. Because hackers won't give you a second chance.
India
