Multilogin is described as 'Run real Android cloud phones and manage antidetect browser profiles from one dashboard. Built for social media managers handling multiple accounts — with built-in proxies, persistent sessions, and team collaboration' and is a Web Browser in the security & privacy category. There are more than 25 alternatives to Multilogin for a variety of platforms, including Windows, Mac, Linux, Web-based and Mozilla Firefox apps. The best Multilogin alternative is Firefox Multi-account Containers, which is both free and Open Source. Other great apps like Multilogin are BrowserJet, GoLogin, Ghost Browser and QuaranTab.
It's supports multiple accounts and is a full featured browser.