Aegis Authenticator is described as 'Free, secure and open source app to manage your 2-step verification tokens for your online services' and is a very popular Authenticator in the security & privacy category. There are more than 50 alternatives to Aegis Authenticator for a variety of platforms, including iPhone, Android, iPad, Android Tablet and Mac apps. The best Aegis Authenticator alternative is Ente Auth, which is both free and Open Source. Other great apps like Aegis Authenticator are Proton Authenticator, Bitwarden Authenticator, Authy and 2FA Authenticator (2FAS).
Aegis Authenticator alternatives are mainly Authenticators, but if you're looking for
Password Managers you can filter on that. Other popular filters include
Open Source and
Windows. These are just examples - use the filter bar below to find more specific alternatives to Aegis Authenticator.