Ricin aims to be a secure, lightweight, hackable and fully-customizable Tox client with focus on user experience. Development is lead by SkyzohKey.
Protox Alternatives
Protox is described as 'Qt 5 Tox client for Android' and is an app in the social & communications category. There are more than 10 alternatives to Protox for a variety of platforms, including Android, Linux, Mac, Windows and Android Tablet apps. The best Protox alternative is Telegram, which is free. Other great apps like Protox are Discord, Tox, Jami and qTox.